how to solve chemistry numericals easily

Chemistry Numericals

Calculate molecular formula - C6H12O6

A compound containing carbon, hydrogen, and oxygen gave the following analytical data:, c = 40% and h = 6.67%, calculate the molecular formula of the compound if its molecular mass is 180., calculate molecular formula - kclo3, on analysis, a substance was found to have the following percentage composition:, k = 31.84, cl= 28.98 and o = 39.18, calculate its molecular formula if its molecular mass is 122.5., calculate empirical and molecular formula - k4fec6n6, a chemical compound is found to have the following composition: , c = 19.57% ; fe = 15.2% ; n = 22.83% ; and k = 42.39%, calculate the empirical formula of the compound., calculate molecular formula - znso4.7h2o, 1.615g of anhydrous znso4 was placed in moist air. after a few days, its mass was found to be 2.875g. what is the molecular formula of the hydrated salt, calculate empirical formula - 9cao. 3p2o5. cacl2, calculate the empirical formula of a mineral having the following composition : , cao = 48.0% ; p2o5 = 41.3% ; cacl2 = 10.7 %.

NEET Preparation Tips
Tips to Solve Numerical in Physics and Chemistry for NEET

Tips To Solve Numerical In Physics & Chemistry For NEET 2023

The 4 step guide to solving neet numericals.

NEET or National Eligibility cum Entrance Test is an annually conducted medical entrance exam, enabling medicine enthusiasts to take up undergraduate medical courses. The conducting body for the exam is National Testing Agency (NTA). NEET, since 2016 has replaced AIPMT and in recent times has also replaced the multiple state level entrance exams and has emerged as a national, single-level entrance test.

Trending: NEET 2023 exam on May 7

For the uninitiated, most of the candidates taking up NEET UG exams are keen on pursuing medicine with a strong foothold in Biology as a subject and medicine as a profession. Such candidates are not necessarily great at Physics and Chemistry. These can turn out to be quite daunting subjects for those who have been running away from these subjects. But, if you have been analyzing concepts from these subjects closely, you would have observed that these subjects are actually very interesting and gripping.

Also Check:

NEET Physics MCQ
NEET Chemistry MCQ
NEET Biology MCQ

Some stats – as per a poll, nearly 50% of the candidates appearing for NEET exams have taken up PCB as subject majors in their +2 classes. This comes as part of a realization that perhaps opting for mathematics may not be a very good option for them due to its complexities. Fairly so, as Physics and mathematics go hand in hand. Physics and Chemistry are subjects involving mathematical concepts and cracking NEET with a good rank becomes unlikely if you do not have a good grip over these subjects.

Unarguably, the section that has the maximum weightage is Biology in NEET exams, but the Physics and Chemistry sections decide your rank. This article aims at bringing to students a 4-step guide to solving numericals from Physics and chemistry sections and paving your way to securing that NEET rank you always dreamt of.

Also see: Important notes for NEET

Before understanding the steps, let us know the ground rules. If you have to solve numericals you must know the theory behind it well. In other words, your theoretical knowledge must be solid and conceptual clarity to the point. For this, you can go line by line through the NCERT books for NEET Physics and Chemistry and understand what the principle topic is.

Once that is sorted, let us attempt to understand how to go about solving numericals for NEET. It is highly recommended to follow these steps only after your concepts are thorough and transparent. With this 4-step guide, one can easily solve any numerical regardless of the topic, read on:

1. Examine questions

Half your job is done when the questions are read closely, the rest is now only up to some rearranging and calculations. Most students, in the wake of saving time, just look for keywords in the questions and skim through the options and then directly to the OMR sheet with their response, as a result, losing out on all the 4 marks, making it worse, lose a mark subsequently impacting your final score immensely. Watch out for this. Read, comprehend, and analyze all your options as well as questions. Post this, recollect concepts linked to the numericals.

2. Rearrange the given data

Jot down the data given in the question. If you have a well-practised hand, some NEET questions would be a breeze as you would just have to glance through, recognize the problem type, and with a rough estimate you have already arrived at the answer. This comes in handy and is part of the elimination method in MCQ type questions. The elimination method increases the chances of your answer being right.

3. Figuring out the procedure and executing

Once you have read the question carefully and organized the information given in the question, your mind already has come up with recalling formulae and gathering concepts. Zero down on an approach and get going. Know what the question is asking and solve the question carefully and with accuracy. In the case of physics, perhaps it would be recalling a formula and in case of chemistry, it can be equations/reactions. If your approach is right, you will arrive at the answer.

4. You have the answer

Match your answers with the options provided. If options have your answers, you did it! If not, look for the closest answer and go for it (some accuracy issues with calculations). But, if your answer is nowhere like that provided in the options, revisit the steps, try a different approach and closely follow your calculations.

If you still do not have the answer, move to the next question. NEET is a time-based exam, remember this. Solve other questions and if you have time in the end, revisit the question. In most cases, one happens to find the right answer at this time, as we have a different attitude towards the end of solving the entire paper. Maybe a different approach or erroneous calculation could get fixed.

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Mole Concept - Numericals

Last updated at April 16, 2024 by Teachoo

Download the questions here Mole Concepts - Class 10 - Numerical by Teachoo.pdf The password to open the file is - teachooblackisbest

Calculate the molar mass of the following substances.

(a) Ethyne, C 2 H 2

(b) Sulphur molecule, S 8

(d) Hydrochloric acid, HCl

(e) Nitric acid, HNO 3

Molar mass of C = 12g

Molar mass of H = 1g

Molar mass of S = 32g

Molar mass of P = 31g

Molar mass of Cl = 35.5g

Molar mass of N = 14g

Molar mass of O = 16g

Molar mass of C 2 H 2 = 2 x Molar mass of C + 2 x Molar mass of H

= 2x 12g + 2 x 1g

= 24g + 2g

= 26g

Molar mass of S 8 = 8 x Molar mass of S

= 8x 32g

= 256g

Molar mass of P 4 = 4 x Molar mass of P

= 4 x 31g

= 124g

Molar mass of HCl = 1 x Molar mass of H + 1 x Molar mass of Cl

= 1x 1g + 1 x 35.5g

= 1g + 35.5g

= 36.5g

Molar mass of HNO 3 = 1 x Molar mass of H + 1 x Molar mass of N + 3 x Molar mass of O

=1x 1g + 1 x 14g + 3 x 16g

= 1g + 14g + 48g

= 63g

Find number of moles of H 2 in 10g of H 2

Answer

Given mass of H 2 = m =10g

Molar Mass of H 2 = M= 2g

We know that,

Number of moles of a substance = Given mass of the substance / Molar mass of the substance

How many moles is 12.044 x 10 23 atoms of He

Number of atoms of the He = N = 12.044 x 10 23

Avogadro's Constant = N O = 6.022 x 10 23

We know that,

Number of moles of a substance = Number of particles of the substance / Avogadro's Constant

= 11.044 x 10 23 / 6.022 x 10 23

= 2 moles of He atoms

How many moles are there in 52g of Helium?

Atomic Mass of Helium = 4 u

So Molar Mass of Helium = 4 gram

It means that Mass of 1 mole of Helium = 4 grams

We can also write as

4 grams = 1 mole

1 gram =1/4 mole

52 grams = (¼) x 52 mole

52 grams = 13 moles

n = Given mass / Molar mass

= 52 / 4

= 13 moles

Calculate the Molar Mass of Calcium Carbonate (CaCO 3 )

1 molecule of CaCO 3 consists of : 1 Calcium (Ca) atom

1 Carbon (C ) atom

3 Oxygen (O) atoms

M of CaCO 3 = (1 x mass of Ca) + (1 x mass of C) + (3 x mass of O)

M of CaCO 3 = (1 x 40) + (1 x 12) + (3 x 16)

M of CaCO 3 = 100g/mol

What is the mass of—

(a) 1 mole of nitrogen atoms?

(b) 4 moles of aluminium atoms (Atomic mass of aluminium = 27)?

Mass of 1 mole of a substance = Molar mass of that substance

(a) 1 mole of nitrogen atoms

Molar mass of Nitrogen (N) = M =14g

Therefore, mass of 1 mole Nitrogen atoms = Molar mass of nitrogen = 14g

(b) 4 moles of aluminium atoms

Molar Mass of Aluminium = 27g

Mass of 1 mole Aluminium atoms = Molar mass of aluminium = 27g

Mass of 4 moles Aluminium atoms = 4 x Molar mass of aluminium

= 4 x 27g

= 108g

Mass of 1 mole Na 2 SO 3 atoms = 2 x Molar mass of Na + 1 x Molar Mass of S + 3 x Molar Mass of O

= 2 x 23g + 1 x 32g + 3 x 16g

= 46g + 32g + 48g

= 126g

Mass of 10 moles Na 2 SO 3 atoms = 10 x Molar mass of Na 2 SO 3

= 10 x 126g

= 1260g

Convert into mole.

(a) 12 g of oxygen gas

(b) 20 g of water

Number of moles of a substance = Given mass of the substance / Molar mass of the substance

Given mass of O 2 = m = 12g

Molar Mass of O 2 = M = 32g

= 12g / 32g

= 6 /16 moles

= ⅜ moles

Given mass of H 2 O = m = 20g

Molar Mass of H 2 O = M = 18g

= 10/9 moles

Given mass of CO 2 = m = 22g

Molar Mass of CO 2 = M = 44g

= 1/2 moles

= 0.5 moles

What is the mass of:

(a) 0.2 mole of oxygen atoms?

(b) 0.5 mole of water molecules?

Mass of the substance = Number of moles x Molar mass of the substance

(a) 0.2 mole of oxygen atoms

Given mass of O = m = ?

Molar Mass of O = M = 16g

Number of moles = n = 0.2 = 2/10

Mass of the substance = Number of moles x Molar of the substance

m = n x M

= (2 /10) x 16

= 32 /10

= 3.2g

(b) 0.5 mole of water molecules

Given mass of H 2 O = m = ?

Number of moles = n = 0.5 = 5/10 = 1/2

= (1/2) x 18

= 18/2

= 9g

Calculate the number of molecules of sulphur (S 8 ) present in 16 g of solid sulphur.

n = m/M ----- (1)

Number of moles of a substance = Number of particles of the substance / Avogadro's Constant

n = N / N O

n = N / 6.022 x 10 23 ------- (2)

From the above 2 formulae, we can say that,

n = m / M = N / 6.022 x 10 23 ---- (3)

Given mass of sulphur molecule(S 8 ) = m = 16g

Molar mass of Sulphur Molecule (S 8 ) = M = 256g

We need to find Number of molecules, ie, N

Putting values in (3), we get

16 / 256 = N / 6.022 x 10 23

N = 6.022 x 10 23 x (16 / 256)

= 6.022 x 10 23 / 16

= 3.011 x 10 23 /8

= 0.37 x 10 23 molecules of Sulphur(S 8 )

= 3.7 x 10 22 molecules of Sulphur (S 8 )

3.42 g of sucrose are dissolved in 18 g of water in a beaker. The number of oxygen atoms in the solution are

(a) 6.68 x10 23

(b) 6.09 x10 22

(d) 6.022.x 10 21

Explanation:

Number of moles = Given mass of substance / Molecular mass of substance

n Sucrose = m / M

n Sucrose = 3.42 g / 342g

n Sucrose = 0.01 mole

1 mol of sucrose → 11 x N 0 atoms of O

0.01 mol of sucrose → 0.01 x 11 x N 0 atoms of O

→ 0.11 x N 0 atoms of O

n H20 = m / M

n H20 = 18 g / 18g

n H20 = 1 mole

1 mol of water → N 0 atoms of O

Total number of O atoms = (0.11 + 1) x N 0

= 1.11 x N 0

= 1.11 x 6.022 x 10 23

= 6.68 x 10 23

If one mole of carbon atoms weighs 12 grams, what is the mass (in grams) of 1 atom of carbon?

Mass of 1 mole of Carbon = Molar mass of C = 12g

1 mole of carbon = 6.0 22 x 10 23 atoms of Carbon

Mass of 6.0 22 x 10 23 atoms of Carbon = 12 g

Mass of 1 atom of Carbon = 12 / 6.0 22 x 10 23

≈ 2 x 10 - 23 g

If 1.4g of Calcium Oxide is formed by the complete decomposition of Calcium Carbonate, then the amount of Calcium Carbonate taken and the amount of Carbon Dioxide formed will be respectively?

2.2g and 1.1g
1.1g and 2.5g
2.5g and 1.1g
5.0 and 1.1g
c) 2.5g and 1.1g

Calcium Carbonate → Calcium Oxide + Carbon Dioxide

CaCO 3 → CaO + CO 2

X → 1.4g + Y

Molecular mass of CaO = 56g

Number of moles of CaO = 1.4/56

= 0.025

Molecular mass of CaCO 3 = 100g

Molecular mass of CO 2 = 44g

So, 0.025 moles of CaCO 3 = 0.025 x 100g

= 2.5g of CaCO 3

And, 0.025 moles of CO 2 = 0.025 x 44g

= 1.1g of CO 2

Which of the following correctly represents 360 g of water?

(i) 2 moles of H 2 O

(ii) 20 moles of water

(iii) 6.022 x 10 23 molecules of water

(iv) 1.2044 x10 25 molecules of water

(b) (i) and (iv)

(d) (ii) and (iv)

(i) 2 moles of H 2 O → 1 mole of H 2 O = 18g → 2 moles = 36g ≠ 360g

(ii) 20 moles of water → 1 mole of H 2 O = 18g → 20 moles = 360g

(iii) 6.022 x 10 23 molecules of water → 1 mole of water molecules = 18g ≠ 360g

(iv) 1.2044 x10 25 molecules of water → 20 moles of water = 360g

Which of the following pairs have the same number of atoms?

A - 16 g of O 2 (g) and 4 g of H 2 (g)

B - 16 g of O 2 and 44 g of H 2

C - 28 g of N 2 and 32 g of O 2

D - 12 g of C(s) and 23 g of Na(s)

One mole of any species (atoms,molecules, ions or particles) is that quantity in number having a mass equal to its atomic or molecular mass in grams.

1 mole of an item = 6.022 x 10 23 items

In 28 g of N 2 and 32 g of O 2

28 g of N 2 = 1 mole of N 2 = 2 x 6.022 x 10 23 atoms

32 g of O 2 = 1 mole of O 2 = 2 x 6.022 x 10 23 atoms

In 12 g of C(s) and 23 g of Na(s)

12 g of C(s) = 1 mole of C = 6.022 x 10 23 atoms

23 g of Na(s) = 1 mole of C = 6.022 x 10 23 atoms

Which of the following contains the greatest number of atoms?

A - 1g of butane

B - 1g of Nitrogen

C - 1g of silver

D - 1g of water

Explanation :

Molecular mass of Butane (C 4 H 10 ) is 58g/mol

There are 14 atoms in the molecule

So, 1g of butane means 1/58 moles = 0.0172 moles

Total number of atoms = 14 x 0.0172 x 6.022 x 10 23 = 1.45 x 10 23 atoms

Molecular mass of Nitrogen (N 2 ) is 28g/mol

There are 2 atoms in the molecule

So, 1g of nitrogen means 1/28 moles = 0.0357 moles

Total number of atoms = 2 x 0.0357 x 6.022 x 10 23 = 0.43 x 10 23 atoms

Molecular mass of Silver (Ag) is 108g/mol

There are is 1 atom in the molecule

So, 1g of silver means 1/108 moles = 0.0092 moles

Total number of atoms = 0.0092 x 6.022 x 10 23 = 0.054 x 10 23 atoms

Molecular mass of Water (H 2 O) is 18g/mol

There are 3 atoms in the molecule

So, 1g of water means 1/18 moles = 0.055 moles

Total number of atoms = 3 x 0.055 x 6.022 x 10 23 = 1.003 x 10 23 atoms

Thus 1g of butane has greatest number of atoms

Which sample contains the largest number of atoms?

A - 1mg of C 4 H 10

B - 1mg of N 2

C - 1mg of Na

D - 1ml of H 2 O

1mg of C 4 H 10 (14 atoms in 1 molecule) = (14 x N x 10 -3 ) / 58 = 2.41 x 10 -4 x N atoms

1mg of N 2 (2 atoms in 1 molecule) = (2N x 10 -3 ) / 28 = 7.14 x 10 -5 x N atoms

1mg of Na (1 atom in 1 molecule) = (N x 10 -3 ) / 23 = 4.34 x 10 -5 x N atoms

1ml of H 2 O (3 atoms in 1 molecule) = 1g of H 2 O = 3N / 18 = 2.41 x 10 -4 x N atoms

Thus 1ml of H 2 O has largest number of atoms

How many moles of Magnesium Phosphate (Mg 3 (PO 4 ) 2 ) will contain 0.25 mole of oxygen atoms?

A - 3.125 x 10 -2

B - 1.25 x 10 -2

C - 2.5 x 10 -2

D - 2 x 10 -2

In one molecule of Mg 3 (PO 4 ) 2 there are 8 Oxygen atoms

So in 1 mole of Mg 3 (PO 4 ) 2 molecules , there will be 8 moles of Oxygen atoms.

1 mole of Mg 3 (PO 4 ) 2 → 8 moles of O atoms

X → 0.25 moles of O atoms

Cross multiplying,

0.25 x 1 = 8X

X = 3.125 x 10 -2

3.125 x 10 -2 moles of Magnesium Phosphate will contain 0.25 mole of oxygen atoms.

Which has the maximum number of molecules?

C - 16g NO 2

D - 16g O 2

Explanation:

n = m / M

7g N 2 → 7 / 28 = 0.25 moles of molecules

2g H 2 → 2 / 2 = 1 mole of molecules

16g NO 2 → 16 / 46 = 0.347 moles of molecules

16g O 2 → 16 / 32 = 0.5 moles of molecules

Thus 2g H 2 has the most number of molecules.

How many gram atoms of H and S are contained in 0.40 mole of H 2 S?

1 mole of a substance = 1 gram atom

In this case

H 2 S has 2 H atoms and 1 S atom

1 mole of H 2 S → 2 gram atoms of H and 1 gram atom of S

So, 0.4 moles of H 2 S →

2 x 0.4 = 0.8 gram atoms of H

1 x 0.4 = 0.4 gram atoms of S

Which has more number of atoms, 100 grams of sodium or 100 grams of iron (given, atomic mass of Na = 23 u, Fe = 56 u)?

To find which one has more atoms, we’ll find the number of moles of both.

Since 1 mole of any substance has the same number of atoms, the element having more number of moles will have more atoms .

Given mass of Na = m n =100g

Given mass of Fe = m f =100g

Molar mass of a substance = Atomic mass of the substance (in g)

Therefore,

Molar mass of Na = M n = 23g

Molar mass of Fe = M f = 56g

For Na, = m n /M n

= 100/23

≈ 4.34 moles

For Fe, = m f /M f

= 100/56

≈ 1.78 moles

Since, Number of moles of Na > Number of moles of Fe .

100g of Na will have more atoms than 100g of Fe .

Calculate the number of moles and molecules in 22g of Acetic Acid.

Acetic Acid has the formula CH 3 COOH

The molecular mass is thus → (12x2 + 1x4 + 16x2)

= 60g

Number of moles n = Given mass / Molar mass

n = 22/60

n = 0.3666 moles

1 mole → 6.022 x 10 23 molecules (according to mole concept)

0.3666 moles → X molecules

X = 0.3666 x 6.022 x 10 23

X = 2.207 x 10 23 molecules

So, 22g of Acetic acid has 0.3666 moles and 2.207 x 10 23 molecules

24 g of Carbon reacts with some Oxygen to make 88g of Carbon Dioxide. Find out the amount of Oxygen used.

The reaction for formation of Carbon Dioxide is;

C + O 2 → CO 2

1 mole of C reacts with 1 mole of O 2 to give 1 mole of CO 2

12g of C reacts with 1g of O 2 to give 44g of CO 2

It is given that 24g of C gives 88g of CO 2

Which is double the amount of C and CO 2

So even O 2 will be double the amount → 32g

In 2 moles of acetaldehyde (CH 3 CHO) calculate the following

Number of moles of C
Number of moles of H
Number of moles of O
Number of molecules of CH 3 CHO
1 mole of acetaldehyde has 2 C atoms ( C H 3 C HO )

So, 1 mole of acetaldehyde has 2 moles of C atoms

That means, 2 mole of acetaldehyde has 4 moles of C atoms

1 mole of acetaldehyde has 4 H atoms ( C H 3 C H O )

So, 1 mole of acetaldehyde has 4 moles of C atoms

That means, 2 mole of acetaldehyde has 8 moles of C atoms

1 mole of acetaldehyde has 1 O atom ( CH 3 CH O )

So, 1 mole of acetaldehyde has 1 moles of O atom

That means, 2 mole of acetaldehyde has 2 moles of C atoms

1 mole → 6.022 x 10 23 molecules (according to mole concept)

2 moles → X molecules

X = 2 x 6.022 x 10 23

X = 12.044 x 10 23 molecules

Calculate the number of aluminium ions present in 0.051 g of aluminium oxide. (Hint: The mass of an ion is the same as that of an atom of the same element. Atomic mass of Al = 27 u)

n = m/M ----- (1)

n = N / N O

n = m / M = N / 6.022 x 10 23 ---- (3)

Given mass of Aluminium ion (Al 2 O 3 )= m = 0.051g

Molar mass of Aluminium Oxide (Al 2 O 3 ) = M = 102g

We need to find Number of ions, ie, N

0.051 / 102 = N / 6.022 x 10 23

N = 6.022 x 10 23 x (0.051 / 102)

= 6.022 x 10 23 x (51 x 10 -3 ) / 102

= 3.011 x 10 (23-3)

= 3.011 x 10 20 molecules

1 molecule of Al 2 O 3 has 2 Al 3+ ions

So, number of Al 3+ ions in 0.051 molecules of Al 2 O 3 is;

3.011 x 10 20 x 2 = 6.022 x 10 20

Thus, 6.022 x 10 20 Al 3+ ions are present in 0.051 molecules of Al 2 O 3

Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo

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Numerical Problems on Molarity

Post author By Hemant More
Post date January 29, 2020
6 Comments on Numerical Problems on Molarity

Science > Chemistry > Solutions and Their Colligative Properties > Numerical Problems on Molarity

In this article, we shall study numerical problems to calculate the molarity of a given solution.

Example – 01:

A solution of NaOH (molar mass 40 g mol -1 ) was prepared by dissolving 1.6 g of NaOH in 500 cm 3 of water. Calculate molarity of the NaOH solution.

Given: Mass of NaOH = 1.6 g, molar mass of NaOH = 40 g mol -1 , volume of water = 500 cm 3 = 500 mL = 0.5 L

To Find: Molarity =?

Number of moles = Given mass/ Molecular mass = 1.6 g/40 g mol -1 = 0.04 mol

Molarity = Number of moles of solute/Volume of solution in L

Molarity = 0.04 mol /0.5 L = 0.08 mol L -1

Ans: The molarity of NaOH solution is 0.08 mol L -1 or 0.08 M

Example – 02:

Calculate molarity of 4 g caustic soda dissolved in 200 mL of solution.

Given: Mass of solute (caustic soda) = 4 g, volume of solution = 200 mL = 0.2 L

To Find: Molarity of the solution =?

Molar mass of caustic solute (caustic soda NaOH) = 23 g x1 + 16 g x 1 + 1 g x 1 = (23 + 16 + 1) g = 40 g

Number of moles of caustic solute (caustic soda) = given mass/molecular mass = 4 g/ 40 g = 0.1

Molarity of solution = Number of moles of the solute/volume of solution in L = 0.1/0.2 = 0.5 M

Ans: The molarity of caustic soa solution is 0.5 mol L -1 or 0.5 M

Example – 03:

Calculate molarity of 5.3 g anhydrous sodium carbonate dissolved in 100 mL of solution.

Given: Mass of solute (sodium carbonate) = 5.3 g, volume of solution = 100 mL = 0.1 L

Molar mass of (Na 2 CO 3 ) = 23 g x 2 + 12 g x 1 + 16 g x 3 = (46 + 12 + 48) g = 106 g

Number of moles of (Na 2 CO 3 ) = given mass/molecular mass = 5.3 g/ 106 g = 0.05

Molarity of solution = Number of moles of the solute/volume of solution in L = 0.05/0.1 = 0.5 M

Ans: The molarity of sodium carbonate solution is 0.5 mol L -1 or 0.5 M

Example – 04:

Calculate molarity of 0.365 g pure HCl gas dissolved in 50 mL of solution.

Given: Mass of solute (HCl) = 0.365 g, volume of solution = 50 mL = 0.05 L

Molar mass of HCl = 1 g x 1 + 35.5 g x 1 = (1 + 35.5) g = 36.5 g

Number of moles of HCl = given mass/molecular mass = 0.365 g/ 36.5 g = 0.01

Molarity of solution = Number of moles of the solute/volume of solution in L = 0.01/0.05 = 0.2 M

Ans: The molarity of HCl solution is 0.2 mol L -1 or 0.2 M

Example – 05:

Calculate molarity of 5.85 g NaCl dissolved in 200 mL of solution.

Given: Mass of solute (NaCl) = 5.85 g, volume of solution = 200 mL = 0.2 L

Molar mass of NaCl = 23 g x 1 + 35.5 g x 1 = (23 + 35.5) g = 58.5 g

Number of moles of NaCl = given mass/molecular mass = 5.85 g/ 58.5 g = 0.1

Ans: The molarity of NaCl solution is 0.5 mol L -1 or 0.5 M

Example – 06:

Calculate molarity of 20.6 g NaBr dissolved in 500 mL of solution.

Given: Mass of solute (NaCl) = 20.6 g, volume of solution = 500 mL = 0.5 L

Molar mass of NaBr = 23 g x 1 + 80 g x 1 = (23 + 80) g = 103 g

Number of moles of NaBr = given mass/molecular mass = 20.6 g/ 103 g = 0.2

Molarity of solution = Number of moles of the solute/volume of solution in L = 0.2/0.5 = 0.4 M

Ans: The molarity of NaBr solution is 0.4 mol L -1 or 0.4 M

Example – 07:

Calculate molarity of pure water if its density is 1 g/mL.

Given: Density of water = 1 g/mL

To Find: Molarity of pure water =?

Let us consider 1000 mL of water

Mass of water = volume x density = 1000 mL x 1 g/mL = 1000 g

Molar mass of water = 1 g x 2 + 16 g x 1 = (2 + 16) g = 18 g

Number of moles of water = given mass/molecular mass = 1000/ 18 g = 55.5

Molarity of pure water = Number of moles of the solute/volume of solution in L = 55.55/1 = 55.55 M

Ans: The molarity of pure water is 55.55 mol L -1 or 55.5 M

Example – 08:

Calculate the quantity of anhydrous sodium carbonate required to produce 250 mL decimolar solution.

Given: volume of solution = 250 mL = 0.25 L, molarity = decimolar = M/10 = 0.1 M

To Find: Mass of anhydrous sodium carbonate =?

Molarity = Number of moles of the solute/volume of solution in L

0.1 = Number of moles of the solute/0.25

Number of moles of the solute = 0.1 x 0.25 = 0.025 mol

Number of moles of = given mass/molecular mass

Mass of Na 2 CO 3 = Number of moles x molecular mass

Mass of Na 2 CO 3 = 106 x 0.025 = 2.65 g

Ans: The quantity of sodium carbonate required is 2.65 g

Example – 09:

Sulphuric acid is 95.8 % by mass. Calculate molarity and mole fraction of H 2 SO 4 of density 1.91 g cm -3 . Given H = 1, S = 32, O = 16.

Given: % by mass = 95.8 %, Density of solution = 1.91 g cm -3

To Find: Mole fraction =? Molarity =?

Consider 100 g of solution

Mass of H 2 SO 4 = 95.8 g and mass of H 2 O = 100 – 95.8 g = 4.2 g

Molecular mass of water (H 2 O) = 1 g x 2 + 16 g x 1 = 18 g mol -1

Molecular mass H 2 SO 4 = 1 g x 2 + 32 g x 1 + 16g x 4 = 98 g mol -1

Number of moles of water = n A = 4.2 g/ 18 g = 0.2333 mol

Number of moles of H 2 SO 4 = n B = 95.8 g/ 98 g = 0.9776 mol

Total number of moles = n A + n B + n C = 0.2333 + 0.9776 = 1.2109

Mole fraction of H 2 SO 4 = x B = n B /(n A +n B ) = 0.9776/1.2109 = 0.8073

Density of solution = 1.91 g cm -3

Volume of solution = Mass of solution / density = 100 g /1.91 g cm -3 = 52.36 cm 3 = 52.36 mL = 0.05236 L

Molarity of solution = Number of moles of the solute/volume of solution in L = 0.9776/0.05236 = 18.67 M

Ans: The mole fraction of H 2 SO 4 is 0.8073 and molarity of solution is 18.67 mol L -1 or 18.67 M

Example – 10:

Commercially available concentrated hydrochloric acid is an aqueous solution containing 38% HCl gas by mass. If its density is 1.1 g cm -3 , calculate molarity of HCl solution and also calculate the mole fraction of HCl and H 2 O.

Given: % by mass = 38 %, Density of solution = 1.1 g cm -3

Mass of HCl = 38 g and mass of H 2 O = 100 – 38 g = 62 g

Molecular mass HCl = 1 g x 1 + 35.5 g x 1 = 36.5 g mol -1

Number of moles of water = n A = 62 g/ 18 g = 3.444 mol

Number of moles of HCl = n B = 38 g/ 36.5 g = 1.041 mol

Total number of moles = n A + n B + n C = 3.444 + 1.041 = 4.485

Mole fraction of HCl = x B = n B /(n A +n B ) = 1.041/4.485 = 0.2321

Mole fraction of H 2 O = x A = n A /(n A +n B ) = 3.444/4.485 = 0.7679

Density of solution = 1.1 g cm -3

Volume of solution = Mass of solution / density = 100 g /1.1 g cm -3 = 90.91 cm 3 = 90.91 mL = 0.09091 L

Molarity of solution = Number of moles of the solute/volume of solution in L = 1.041/0.09091 = 11.45 M

Ans: Molarity of solution is 11.45 mol L -1 or 11.45 M, the molefraction of HCl is 0.2321 and that of H 2 O is 0.7679

Example – 11:

Commercially available concentrated hydrochloric acid is an aqueous solution containing 40% HCl gas by mass. If its density is 1.2 g cm -3 , calculate molarity of HCl solution.

Given: % by mass = 40 %, Density of solution = 1.2 g cm -3

To Find: Molarity =?

Mass of HCl = 40 g and mass of H 2 O = 100 – 40 g = 60 g

Number of moles of HCl = n B = 40 g/ 36.5 g = 1.096 mol

Density of solution = 1.2 g cm -3

Volume of solution = Mass of solution / density = 100 g /1.2 g cm -3 = 83.33 cm 3 = 83.33 mL = 0.08333 L

Molarity of solution = Number of moles of the solute/volume of solution in L = 1.096/0.08333 = 13.15 M

Ans: Molarity of solution is 13.15 mol L -1 or 13.15 M

Example – 12:

Calculate molarity of a solution containing 50 g of NaCl in 500 g of solution and having density 0.936 g/cm 3 .

Given: Mass of solute (NaCl) = 50 g, mass of solution = 500 g, density of solution = d = 0.936 g/cm 3 .

To Find: Molarity of solution = M =?

Number of moles of NaCl = given mass/molecular mass = 50 g/ 58.5 g = 0.8547

Density of solution = 0.936 g cm -3

Volume of solution = Mass of solution / density = 500 g /0.936 g cm -3 = 534.2 cm 3 = 534.2 mL = 0.5342 L

Molarity of solution = Number of moles of the solute/volume of solution in L = 0.8547/0.5342 = 1.6 M

Ans: The molarity of NaCl solution is 1.6 mol L -1 or 1.6 M

Previous Topic: Numerical Problems on Mole Fraction

Next Topic: Numerical Problems on Molality

Tags Alloys , Amalgams , Aqueous solution , Chemistry , Colloidal solution , Concentration , Corse solution , Dissolving , Formality , Gaseous solutions , Grams per litre , Heterogeneous solution , Homogeneous solution , Immiscible liquids , Insoluble substance , Liquid solutions , Mass percentage , Miscible liquids , Molality , Molar concentration , Molarity , Molarity of dilution , Molarity of mixing , Mole , Mole fraction , Normality , Percentage by mass , Percentage by mass by volume , Percentage by volume , ppm , Saturated solution , Solid solutions , Solubility , Solubility curves , Soluble substance , Solute , Solution , Solvent , Strength , Supersaturated solution , Suspension , True solution , Types of solutions , Unsaturated solution Particles per million

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Numerical Problems Based on Class 12 Chemistry Chapter 2 Solutions

Last modified on: 3 months ago
Reading Time: 11 Minutes

Board	CBSE
Useful for	Class 12 Students
Subject	Chemistry
Chapter	Chapter 2 Solutions
Type of Questions	Numerical Problems
Answers Provided	Yes
Format	Question-Answer Format
Important Link

Table of Contents

Here we are providing numerical problems based on CBSE Class 12 Chemistry Chapter 2 Solutions. Students are suggested to go through each and every questions for better understanding of the chapter.

Q.1 . Calculate the mole fraction of water in a mixture of 12 g water, 108 g acetic acid and 92 ethanol.

Q.2. Calculate the mole fraction of ethanol and water in a sample of rectified spirit which contains 95% ethanol by mass.

Ans. Ethanol=0.88, water =0.12

Q.3. One litre solution of N/2 HCl is heated in a beaker. It was observed that when the volume of the solution is reduced to 600 mL, 3.25 g of HCl is lost. Calculate the normality of the new solution.

Ans. 0.685 N

Q.4. What volume of 95 mass % sulphuric acid (density = 1.85 g/cm 3 ) and what mass of water must be taken to prepare 100 cm 3 of 15 mass % solution sulphuric acid (density = 1.10 g/cm 3 )?

Ans. 9.4 cm 3 , 92.6g

Q.5. What volume of 10% (w/v) solution of Na 2 CO 3 will be required to neutralise 100 mL of HCl solution containing 3.65 g of HCI?

Ans. 53.19 mL

Q.6. Concentrated sulphuric acid has a density 1.9 g/mL and is 99% H 2 SO 4 by weight calculate molarity of sulphuric acid in the acid.

Ans. 19.19 M

Also read: Case Study Questions for Class 12 Chemistry Chapter 2 Solutions

Q.7. 18 g of glucose (molar mass 180 g mol -1 ) is present in 500 cm3 of of its aqueous solution. What is the molarity of the solution? What additional data is required if the molality of the solution is also required to be calculated ?

Ans. 0.2M, density of solution is needed to calculate molality of the solution

Q.8. Calculate the percentage composition in terms of mass of a solution obtained by mixing 300 g of a 25% and 400 g of a 40% solution by mass.

Ans. 33.57%, 66.43%

Q.9. Calculate the molality and mole fraction of the solute in aqueous solution containing 3 g of urea per 250 g of water.

Ans. Molality=0.2 m, Mole fraction = 0.0036

Q.10. The molality of a solution of ethyl alcohol (C 2 H 5 OH) in water is 1.55 m. How many grams of ethyl alcohol are dissolved in 2 kg of water ?

Ans. 142.6 g

Q.11. Commercially available concentrated hydrochloric acid contains 38% HCl by mass and has density 1.19 g cm -3 . Calculate the molarity of this solution.

Ans. 12.4 M

Q.12. A solution of glucose (C 6 H 12 0 6 ) in water is labelled as 10% by weight. What would be the molality of the solution?

Ans. 0.618 m

Also read: Assertion Reason Questions for Class 12 Chemistry Chapter 2 Solutions

Q.13. Calculate the formality of sodium thiosulphate (Na 2 S 2 O 3 . 5H 2 0) solution, of which are dissolved in 100 cm of the solution.

Ans. 0.05 F

Q.14. 4.0 g of NaOH are contained in one decilitre of a solution. Calculate (i) mole fraction of NaOH (ii) molarity of NaOH (iii) molality of solution. (density of solution = 1.038 g mL -1 ).

Ans. (i) 0.018 (ii) 1M (iii) 1.002 m

Q.15. Calculate the molarity and molality of a solution prepared by mixing equal volumes of 30% by weight of H 2 SO 4 density = 1.218 g/mL) and 70% by weight of H 2 SO 4 of solution (density = 1.610 g/mL).

Ans. 7.6 M, 11.4 m

Q.16. Calculate the molarity of a solution of CaCl 2 if on chemical analysis it is that 500 mL of CaCl 2 solution contain 1.505 x 10 23 Cl – ions.

Ans. 0.25 M

Q.17. The concentration of solution of sulphuric acid is 18 M and has density 1.84 g cm3. What is the mole fraction and weight percentage of H 2 SO 4 in the solution?

Ans. 0.81, 95.87%

Q.18. Calculate the number of molecules of oxalic acid (H 2 C 2 0 4 . 2H 2 0) in 100 of 0.2 N oxalic acid solution.

Ans. 6.02 x 10 21 molecules

Q.19. In a solution of benzene in chloroform (CHCl 3 ), the mole fraction of is 0.45. Calculate its percentage by weight in the mixture.

Q.20. 100 mL of a solution containing 5 g of NaOH are mixed with 200 mL of M/5 NaOH solution. Calculate the molarity of the resulting solution.

Ans. 0.55 M

Q.21. 8.0575 10 -2 kg of Glauber’s salt is dissolved in water to obtain 1 dm3 solution of density 1077.2 kg m-3. Calculate (i) the molarity (ii) the molality and (iii) mole fraction of Na 2 SO 4 , in the (Atomic masses : Na = 23.00, S = 32.10, 0 = 16.00, H = 1.01)

Ans. (i) 0.25 M (ii) 0.24 M (iii) 0.0043 M

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How to Solve Numerical Problem Quickly in NEET Physics and Chemistry

Unlock your inner genius and conquer NEET 2024 with mind-boggling speed using these transformative physics and chemistry hacks.

☛ Know the Fundamentals
☛ Develop a Solid Foundation
☛ Organize and Analyze the Problem
☛ Visualize the Solution
☛ Apply the Right Formula or Equation
☛ Show Your Work
☛ Practice, Practice, Practice
☛ Learn from Mistakes
☛ Seek Assistance When Needed
☛ Conclusion

Are you ready to conquer the Physics and Chemistry section of NEET 2024 with ease? Well, you're in the right place! Solving numerical problems in these subjects can often feel daunting, but with the right strategies and mindset, you can tackle them like a pro. In this blog post, we will guide you through a step-by-step approach to solve numerical problems easily in the NEET 2024 Physics and Chemistry section.

"Unleash your inner Einstein with quick numerical problem-solving techniques in Physics and Chemistry! Master NEET 2024 like a pro"

Know the Fundamentals

Before diving into numerical problem-solving, it's crucial to review and solidify your understanding of the subject's fundamentals. Physics and Chemistry are built upon fundamental concepts, principles, and formulas. Take the time to revisit these key concepts, ensuring you have a thorough grasp of the underlying principles and formulas. This step acts as a foundation for the subsequent problem-solving techniques.

Also Read - NEET Exam Registration 2024, Fees, Process, @neet.nta.nic.in

Develop a Solid Foundation

A strong mathematical foundation is essential for tackling numerical problems effectively in NEET 2024. Enhance your critical thinking abilities, refresh your basic mathematical skills, and focus on improving your problem-solving techniques. Investigate common problem-solving strategies, such as dimensional analysis, unit conversions, and approximation methods. By honing these skills, you will be better equipped to handle numerical problems confidently.

Organize and Analyze the Problem

Once you encounter a numerical problem, it is crucial to approach it systematically. Begin by carefully reading and understanding the problem statement. Pay attention to any given information and identify the relevant variables. Next, extract the crucial data and figures from the problem, which will lead you towards the solution. A well-organized and analytical approach can save you precious time and prevent errors in subsequent steps.

Visualize the Solution

Visualization is an invaluable tool in numerical problem-solving. Use your imagination to construct a mental framework for approaching the problem. If the situation allows, draw diagrams, charts, or tables to simplify complex problems. Breaking down the problem into smaller, more manageable steps allows you to tackle each part individually. Visualization not only aids understanding but also helps you to stay focused and organized throughout the process.

Also Read - NEET UG EXAM 2024, Eligibility, Syllabus, Preparation Tips

Apply the Right Formula or Equation

Having a deep understanding of the formulas and equations relevant to the problem is vital. Identify the appropriate formula(s) and equation(s) based on the given problem. Consider the given units and dimensions, as they provide important clues to choosing the right formula. Accurate and efficient application of the relevant equations is crucial for obtaining correct results. Practicing various problems will help you recognize patterns and develop quick decision-making skills.

Show Your Work

Showcasing your work is not just about getting full marks but also about maintaining a clear thought process. Clearly document each step of your solution process, ensuring that your calculations are organized and easy to follow. Use proper notation and include appropriate units at every step. Properly showing your work will not only help you organize your thoughts but also aid in reducing errors.

Practice, Practice, Practice

As with any skill, practice is key to mastering numerical problem-solving. Regularly solve a variety of numerical problems relevant to NEET 2024 Physics and Chemistry. Utilize online resources, textbooks, and practice tests to obtain a wide range of problem types. Practice not only increases your speed and accuracy but also helps you develop problem-solving intuition. Work on time management strategies during practice sessions to enhance your ability to solve problems under exam conditions.

Also Read - NEET Topper’s List 2023 (Out), AIR 1, 2, 3 Check Topper Name, Marks, Ranks

Learn from Mistakes

Mistakes are an integral part of the learning process. Analyze incorrect answers and identify errors in your solutions. Understand the reasons behind these mistakes. Was it a conceptual error, a calculation error, or misinterpretation of the problem? Learning from these mistakes will help you avoid similar errors in the future. Keep track of common mistakes you make and focus on them during practice sessions. Remember, every mistake is an opportunity to grow!

Seek Assistance When Needed

Never hesitate to seek assistance when you are stuck or need clarification. Join study groups or online forums to engage with peers who may have a different perspective on problem-solving techniques. Consult your teachers and mentors for guidance whenever required. They have a wealth of knowledge and expertise to share. If necessary, don't hesitate to seek professional help from tutors or educators who can provide additional support.

In conclusion, solving numerical problems easily in the NEET 2024 Physics and Chemistry section requires a systematic and disciplined approach. Reviewing the fundamentals, developing a solid foundation, organizing and analyzing problems, visualizing the solutions, applying the right formulas, showcasing your work, and practicing regularly are key strategies to employ. Learn from your mistakes and seek assistance when needed. The NEET 2024 is not just a test of knowledge, but also a test of problem-solving skills. By harnessing these techniques, you'll be well on your way to unleashing your inner Einstein and achieving success in NEET 2024!

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Education and Communications

How to Solve Any Physics Problem

Last Updated: July 21, 2023 Fact Checked

This article was co-authored by Sean Alexander, MS . Sean Alexander is an Academic Tutor specializing in teaching mathematics and physics. Sean is the Owner of Alexander Tutoring, an academic tutoring business that provides personalized studying sessions focused on mathematics and physics. With over 15 years of experience, Sean has worked as a physics and math instructor and tutor for Stanford University, San Francisco State University, and Stanbridge Academy. He holds a BS in Physics from the University of California, Santa Barbara and an MS in Theoretical Physics from San Francisco State University. This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources. This article has been viewed 329,561 times.

Baffled as to where to begin with a physics problem? There is a very simply and logical flow process to solving any physics problem.

Ask yourself if your answers make sense. If the numbers look absurd (for example, you get that a rock dropped off a 50-meter cliff moves with the speed of only 0.00965 meters per second when it hits the ground), you made a mistake somewhere.
Don't forget to include the units into your answers, and always keep track of them. So, if you are solving for velocity and get your answer in seconds, that is a sign that something went wrong, because it should be in meters per second.
Plug your answers back into the original equations to make sure you get the same number on both sides.

Step 10 Put a box, circle, or underline your answer to make your work neat.

Community Q&A

Many people report that if they leave a problem for a while and come back to it later, they find they have a new perspective on it and can sometimes see an easy way to the answer that they did not notice before. Thanks Helpful 249 Not Helpful 48
Try to understand the problem first. Thanks Helpful 186 Not Helpful 51
Remember, the physics part of the problem is figuring out what you are solving for, drawing the diagram, and remembering the formulae. The rest is just use of algebra, trigonometry, and/or calculus, depending on the difficulty of your course. Thanks Helpful 115 Not Helpful 34

Physics is not easy to grasp for many people, so do not get bent out of shape over a problem. Thanks Helpful 100 Not Helpful 25
If an instructor tells you to draw a free body diagram, be sure that that is exactly what you draw. Thanks Helpful 89 Not Helpful 24

Things You'll Need

A Writing Utensil (preferably a pencil or erasable pen of sorts)
Calculator with all the functions you need for your exam
An understanding of the equations needed to solve the problems. Or a list of them will suffice if you are just trying to get through the course alive.

Expert Interview

Thanks for reading our article! If you’d like to learn more about teaching, check out our in-depth interview with Sean Alexander, MS .

↑ https://iopscience.iop.org/article/10.1088/1361-6404/aa9038
↑ https://physics.wvu.edu/files/d/ce78505d-1426-4d68-8bb2-128d8aac6b1b/expertapproachtosolvingphysicsproblems.pdf
↑ https://www.brighthubeducation.com/science-homework-help/42596-tips-to-choosing-the-correct-physics-formula/

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How to Solve Physics Numericals for NEET 2024? Effective Tips

Learn How to Solve Physics Numerical for NEET 2024 and increase the chance of your NEET 2024 success. Here in this post, you will get short trick and practical tips to solve numerical and ways to polish your problem solving skills.

April 1, 2024

How to solve physics numerical for NEET 2024

Table of Contents

Solve Physics Numericals for NEET 2024 : Getting admission into medical colleges through NEET is a big dream for many students in India. NEET, which is the only entrance exam to pursue medical education in India is like the main door that opens to both government and private medical colleges.

It is a special test conducted by NTA, where students face questions from three subjects – Physics, Chemistry, and Biology. Now, among these subjects, Physics can feel like a tough challenge for most students. People say it’s the trickiest part of the whole test. The Physics questions, especially the ones with numbers, can make even really smart students scratch their heads.

But don’t worry, it won’t seem so hard if you know some quick tricks to solve these number problems fast. This article is here to help you with important info about the NEET 2024 Physics subject . Here you will find tips and tricks to solve physics problems quickly and accurately.

NEET Previous Year Question Papers

Syllabus to Solve Physics Numericals for NEET 2024

Understanding the NEET Physics syllabus is very important before becoming a master to Solve Physics Numericals for NEET 2024. Understanding the NEET Physics syllabus build a foundation for developing successful problem-solving skill. The Physics section of NEET is a maze of concepts, formulas, and numericals intricacies. Here’s why grasping the syllabus is crucial for solving numerical problems effectively.

Enroll Now to the Class 11 NEET Online Courses By PW

Syllabus to Solve Physics Numericals for NEET 2024
Class 11	Class 12
Physical-world and measurement	Electrostatics
Kinematics	Current Electricity
Laws of Motion	Magnetic Effects of Current and Magnetism
Work, Energy, and Power	Electromagnetic Induction and Alternating Currents
Motion of systems of particles and rigid body	Electromagnetic Waves
Gravitation	Optics
Properties of bulk matter	Dual Nature of Matter and Radiation
Thermodynamics	Atoms and Nuclei
Behaviour of Perfect gas and Kinetic theory	Electronic Devices
Oscillations and Waves

Clarity on Exam Requirements – A detailed understanding of the syllabus helps in identifying the scope of the Physics section in NEET. Knowing what topics are included ensures that you don’t waste time studying irrelevant material.

Strategic Preparation – Awareness of the syllabus helps in planning your preparation strategically. Focusing on key chapters and allocating time-based on the weightage is more important to ace the NEET exam.

Targeted Learning – By understanding the syllabus, you can tailor your learning approach to focus on specific areas that carry more weight in the exam. This targeted learning enhances your efficiency in tackling numericals problems.

Conceptual Clarity – The syllabus acts as a roadmap, guiding you through the fundamental concepts of Physics. A clear grasp of these concepts is essential for solving numericals problems, as they often involve the application of theoretical knowledge.

NEET Physics Chapter wise Weightage

How to Solve Physics Numericals for NEET 2024

Step 1: Understand the Given conditions, Carefully read the problem to grasp the scenario presented. Identify the known quantities, what needs to be found, and any specific conditions given.

Step 2: Identify Relevant Concepts, Connect the numericals problem to the relevant physics concepts. pinpoint the laws, formulas, and theories associated with the problem at hand.

Step 3: Write Down the Given Data, Note down all the provided data and quantities. Systematically organize the information to avoid confusion during calculations.

Step 4: Select the Appropriate Formula, Choose the formula that aligns with the identified physics concepts. Ensure the units of the known quantities match those required by the formula.

Step 5: Break Down the Problem, If the numericals problem is complex, break it down into smaller, manageable steps. Solve each step systematically, linking the solutions to arrive at the final answer.

Step 6: Use Approximations Wisely, When appropriate, make quick approximations to simplify calculations. This is especially helpful in exams where time is limited.

Step 7: Visualize the Solution, Create mental images or sketches to visualize the solution. This is particularly beneficial for problems involving motion, forces, or complex geometries.

Step 9: Check Units Throughout, Regularly check and convert units as needed. Consistent units throughout the calculation process prevent errors and ensure the correctness of the final answer.

Bonus Tip – Try the Elimination Method first, thoroughly observe the options, and analyze the most possible incorrect options given to the question. It will help you to save a lot of time.

Do or Die Chapters for NEET 2024

Short Tricks to Solve Physics Numericals for NEET 2024

Physics numericals in NEET can be like a puzzle, challenging yet solvable. To conquer these challenges successfully, mastering short tricks and tips is essential. Here are some practical short tricks to Solve Physics Numericals for NEET 2024 with confidence and efficiency:

Formula Flashcards – Create a set of flashcards with essential formulas. Quick access to these during the exam saves time and ensures accuracy.

Unit and Dimension Check – Before diving into calculations, ensure all units are consistent. Mismatched units can lead to errors.

Visualization Techniques – For problems involving motion or forces, create mental images or quick sketches. Visualization aids in better understanding and problem-solving.

Pattern Recognition – Practice regularly to identify common patterns in numericals problems. Recognizing similarities streamlines your approach.

Priority Problem Solving – Tackle simpler problems first to build momentum. Save the more complex ones for later, ensuring you secure the easier marks early on.

Alternative Approaches -Develop alternative methods for problem-solving. If one approach proves challenging, having a backup strategy is invaluable.

Quick Approximations – Learn to make quick approximations to simplify calculations. This skill is especially handy during time-constrained exams.

Focus on High Weightage Chapters – Identify chapters with higher weightage in NEET. Devote more time to mastering numericals in these areas.

Practice with Mock Tests – Regularly take full-length mock tests. This not only improves speed but also enhances your familiarity with different types of numericals.

Learn from Mistakes – Review and understand mistakes in practice sessions. Learning from errors helps you avoid similar pitfalls in the actual exam.

By incorporating these short tricks to Solve Physics Numericals for NEET 2024, you’ll not only streamline your problem-solving but also approach the exam with greater confidence.

Enroll Now to the Class 12 NEET Online Courses By PW

How to Polish Numerical Problem-Solving Skills for NEET 2024?

Learning How to Solve Physics Numerical for NEET 2024 is not a one-day goal. It requires regular practice that will help to Polish Numerical Problem-Solving Skills for NEET 2024 gradually. Here are some tips that you can incorporate when you sit to solve Physics problems.

Carefully read and understand the question to identify the underlying concepts.
Note down all the relevant data provided in the question.
Look at the given options to facilitate an intuitive selection without overthinking.
Decide on the most suitable problem-solving method for the identified concept.
If the answer doesn’t match any of the options, double-check for calculation mistakes or consider an alternative approach.
If time is limited, move on to the next question rather than getting stuck on a single problem unnecessarily.
Save questions involving complicated calculations for later; tackle simpler ones first.
Pay attention to the units of the answers given in the options and convert units accordingly.
Take regular mock tests, both online and offline, to improve speed and problem-solving skills.
Practice with previous year’s question papers to familiarize yourself with the exam pattern and refine your approach.

The above tips and tricks of How to solve physics numericals will boost your NEET 2024 preparation . NEET aspirants are suggested to get the Physics Med Easy . This Book has handwritten notes by the physics wallah team, you will get all the shortcuts and physics-related formulas here.

How to solve physics numerical for NEET 2024 FAQs

Begin by carefully reading the problem to understand the scenario. Identify known quantities, what needs to be found, and any specific conditions given. This initial understanding is crucial for a successful problem-solving approach.

Connect the problem to relevant physics concepts, and then choose a formula that aligns with those concepts. Ensure that the units of known quantities match those required by the formula. This step helps in the accurate application of formulas.

Yes, breaking down complex problems into smaller, manageable steps is highly recommended. This systematic approach helps in solving each step independently, making the overall problem more manageable and reducing the likelihood of errors.

Absolutely. Quick approximations can simplify calculations, especially in time-constrained exams like NEET. However, it's important to use approximations judiciously and ensure they do not compromise the accuracy of the final answer.

Regularly check and convert units as needed throughout the calculation process. Consistent units help prevent errors. Additionally, revisiting the problem and reviewing each step after completion can help catch any mistakes and ensure the correctness of the final answer.

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How to solve Numerical in Physics & Chemistry for NEET 2020

The National Eligibility cum Entrance Test (NEET) is a yearly entrance examination conducted by National Testing Agency (NTA) for those students who are interested in the medical field and are looking to get a seat in one of the prestigious medical colleges in India. Chemistry and Physics numericals are a nightmare for those who can’t solve it and a piece of cake for those who can solve it.

According to a survey around 50% of the NEET candidates select PCB as their subject because they either hate maths or are unable to solve maths problems. It’s a fact that Maths will never leave you wherever you go or whatever subjects you choose. Physics and Chemistry are full of mathematical concepts and if your grip over solving numericals is not good then you can’t crack NEET exam with a decent rank.

Without any doubt, Biology has the highest weightage in NEET Exam but Physics and Chemistry are the rank deciders. In this article we have mentioned some tips and tricks that you should keep in mind while solving physics and chemistry numericals and that will definitely help you in boosting up your All India NEET Rank.

If you are trying to solve the physics and chemistry numericals without understanding the concepts then you are trying to eat the cake without preparing it. Hence, the very first thing you should do is to make a thorough line by line reading of your NCERT books for Physics and Chemistry.

Now, coming to the main part, that is what should be your approach or how you should attempt a numerical in your NEET Exam. The below mentioned steps are not steps, they are golden steps with short-cuts & tricks to solve any numerical irrespective of the topic accurately in one condition that you are thorough with the topic the question is asked from.

Step 1 : Half question gets solved when you read the question carefully. This might sound strange but most of the students just read the keywords in the question and jump to the options directly and lose 4 marks plus 1 negative mark adds to their total score. Hence you should read it, understand it, analyze what is asked and recall the concept related to the numerical.

Step 2 : Organize the given information and see the options. Sometimes you can easily recognise with rough calculation in mind which option is correct. This also helps in eliminating the wrong options and increases the chances of your answer being the correct one.

Step 3 : Decide the approach and start attempting the question carefully and solve it accurately and according to what is asked. Recall the formula with respect to physics or any equation with respect to chemistry. If you are applying the required approach then you would be able to solve it and if not then you will find yourself struggling with the question.

Step 4 : If your answer is matching with any of the given options then cheers! and if not a single option matches with your answer then try to identify the calculation mistake and if you are unable to do so then move on. Yes you read that right, move on to the easy questions and tackle this at last when you are left with time.

Step 5 : It is rightfully said that “Do not fear failure but rather fear not trying.” Hence, when you are left with some, then make sure to come back to this numerical again. Take a deep breath and attempt the question again. In many cases it happens that you find the correct approach with the second attempt.

Even if you are unable to solve it after trying again and again then you should consider two scenarios. First is that if you are confused among three or all four options then never attempt that question because NEET paper has negative marking but if you are closely confused among 2 options then you can take a chance else leave that numerical.

So, follow these five golden steps for solving physics and chemistry numericals and we are sure enough your problem solving skills will increase you’ll experience a dramatic change in you when it comes about solving numericals. Last but not the least, when you are done practicing numericals, you should start solving NEET previous years papers to get a good overall grip on both the subjects.

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How to Solve Numerical Problems Quickly in NEET Physics and Chemistry

Before attempting any numerical problem, ensure you have a solid understanding of the underlying physics concepts. without a clear grasp of the theory, solving numerical problems becomes challenging. , understand the concepts: , memorize the relevant formulas and equations. understanding where and how to apply each formula is crucial for solving numerical problems accurately. , review formulas : , carefully read the problem statement and break it down into its constituent parts. identify the given information and what you're asked to find. , break down the problem : , pay close attention to the units of the quantities given and those you're asked to find. make sure your units are consistent throughout the calculations. , units and dimensions : , if the problem involves a physical situation, sketch relevant diagrams to visualize the scenario. this can help you better understand the problem and determine the appropriate approach to solving it. , sketch diagrams : , determine which concepts and principles are applicable to the given problem. link the problem to the appropriate theory or formula. , identify relevant concepts : , plug in the given values into the relevant equations. double-check your calculations for accuracy. , substitute values : , simplify the equations by canceling out common terms or rearranging terms. this can make the calculations less complex. , simplify equations : , gear up neet exams with top recommended books, study notes, test series & more...

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Physics Preparation Tips- How to Prepare Physics for NEET?

Syllabus and Exam Pattern

The very first step for your exam preparation is to check the NEET Physics Syllabus and Exam Pattern. You also need to be aware of the marking scheme for the Physics Section in the NEET Exam.

Clear Your Concepts

According to Previous Year Papers, Mechanics, Heat & Thermodynamics, Electrodynamics and Modern Physics are the most important topics in NEET Physics. So for your Physics Preparation, you must first clear the concepts related to these topics. Once you clear all the concepts, you are now ready to follow the next step.

Learn Formulas

Formulas are the backbone of Physics. Learning Formulas is the most important step while preparing NEET Physics. So, try to learn those formulas daily. Make a small diary and write all the Physics Formula for NEET. Now, you just need to revise those formulas daily, once or twice a day.

Refer Best Books

For your preparation, you need to refer best Physics Books for NEET Exam.

NCERT is the best book to prepare for NEET Exam. Most of the questions are asked from NCERT book. But for practising numerical problems, you may refer other books as well. These books include:

Concept of Competition Physics for CBSE PMT by Aggarwal’s

NCERT- Physics Part 1 and Part 2

Concepts of Physics by H.C. Verma

NCERT Physics: CBSE PMT set of 3 Volumes by Anil Aggarwal

Solve Previous Year Question Papers

The best way to prepare for NEET Physics is to solve Previous Year Question Papers. Solving these NEET Physics Questions will help you identify the type of questions asked in the NEET Exam. It also improves your speed and accuracy. So, solve as many question papers as possible and get yourself prepared for the exam.

During your NEET Physics Preparation, you need to make notes of all the important formulas, theorems and concepts. Physics Notes for NEET will help you to learn the concepts faster and will also help you in your last-minute preparation.

Take Online Mock Tests

Taking Online Mock Tests will help you identify your level of preparation that how much you have prepared for the exam. It will also help you identify your weak areas.

Improve Your Weak Areas

Try to improve your weak areas. Focus more on the topics in which you are weak. Make a list of those topics and try to improve those. You must start with the most important topics of NEET Physics and after that prepare for the less important ones.

Below is the table of Most Important, Important and Less Important Topics for NEET Physics.


Electronic Devices	Atoms and Nuclei	Alternating Current
Electrostatics	Current Electricity	Behavior of Perfect Gas and Kinetic Theory
Heat and Thermodynamics	Dual Nature of Matter and Radiation	Electromagnetic Waves
Kinematics	Electromagnetic Induction	Gravitation
Laws of Motion	Motion of System of Particles and Rigid Body	Physical World and Measurement
Magnetic effect of Current and Magnetism	Optics	Properties of Bulk Matter
Oscillations and Waves	Work, Energy & Power	-

So, candidates who are preparing for NEET Exam must start with the most important topics for Physics Preparation. It is also important to know the no. of questions asked from every chapter in the NEET Exam 2020 in Physics Section.

Below is the list of chapters from which the questions were asked in the NEET Physics Exam.

NEET Physics Analysis: Chapters Asked in NEET Exam

Below is the complete NEET Physics Analysis of the no. of questions asked from each chapter and the marks these contain in Exam:


Capacitance	1	4
Centre of Mass	1	4
Circular Motion	4	16
Current Electricity	3	12
Electro-Magnetic Induction	2	8
Electrostatics	3	12
Error and Analysis	1	4
Fluid Mechanics	1	4
Geometrical Optics	4	16
Gravitation	2	8
KTG & Thermodynamics	2	8
Magnetism	3	12
Modern Physics	3	12
Newton's Laws of Motion	1	4
Properties of Matter	1	4
Rectilinear Motion	1	4
Relative Motion	1	4
Rigid Body Dynamics	2	8
Semiconductor Devices	2	8
Simple Harmonic Motion	2	8
Surface Tension	1	4
Thermal Expansion	1	4
Unit and Dimension	1	4
Wave Optics	1	4
Work Energy and Power	1	4

How to Study Physics for NEET: Topic-wise Preparation Tips

Motion of System of Particles and Rigid Body

Questions for finding torque and Moment of inertia of regular bodies using parallel and perpendicular axes theorem is considered an important section in NEET Physics. Practice more for these types of questions.

Also, practice numerical based on conservation of angular momentum and rolling motion.

Circular Motion questions can be easily solved by the candidates. So, do practice for those questions.

Kinematics is the most important unit of NEET Physics. Most of the students find this chapter easy and interesting.

Problems based on finding Range, Maximum height, Time of flight, Velocity at any point on the trajectory are considered important in NEET Physics.

Make notes of all important formulas, theorems and derivations. This will help you in your last-minute preparation.

Clear all your concepts of displacement, acceleration, average velocity, relative velocity.

Heat & Thermodynamics

Clear all your basics related to this chapter of NEET Physics.

Clear all your concepts of Zeroth law of Thermodynamics, Joule's law, and First law of Thermodynamics.

Practice some model papers on Carnot engine – Efficiency and Coefficient of performance.

Kinetic theory of gasses is the easy and simple topic and questions from this topic which can be solved easily.

Modern Physics is one of the most important and scoring topic of NEET Physics. Start with the topics such as radioactive decay of substances, nuclear fission and fusion, dual nature of matter, X-rays and Bohr’s model.

To clear all your basic concepts, you should refer to NCERT book.

For theory part, refer “Concepts of Physics by H C Verma” and for numerical problems refer “3000 Solved Problems in Physics by Schaum”.

How to Study Physics for NEET: Coaching vs Self Study

Most of the students preparing for NEET Physics get confused, whether they should go for coaching classes or should do self-study. Most candidates prefer going for coaching classes because everybody in their group is doing that too.

Coaching classes today are very expensive. But to clear all the concepts, one needs proper guidance.

But self-study saves your time, money and energy. So, which is the best option to prepare for NEET Physics?

To answer this question below we have provided some important factors for NEET Physics Coaching vs Self-Study.

Systematic and Latest Curriculum

Coaching institutes provide the latest Books, Syllabus, Preparation timetable, Test Series Schedule, and everything that you need during NEET Physics Preparation.

But if you go for self-study, it will save lots of money and time. You may lose lots of time to figure out which should be the best book to prepare from, what are the important topics in NEET Physics etc.

While preparing for NEET Physics, you need to clear all your doubts as soon as possible. Candidates who choose to go for coaching classes may clear all their doubts from their teachers. There are no better people than your teachers to clear your doubts.

Coaching classes nowadays have become very expensive. You need to invest lots of money and time for coaching classes. Most of the candidates preparing for NEET Physics cannot go for coaching classes as it requires a huge amount of money and time.

So, choosing an option what others choose is not a great idea. You should choose an option you are most comfortable in.

If you are ready to invest a huge amount of money and time, then go for coaching classes. If you think you can crack NEET Physics on your own, then go for it.

NEET Physics Last-Minute Preparation Tips

As NEET Exam is approaching closer, most of the candidates must be worried about their performance in the exam.

Instead of getting worried about your exam, you must follow the below last-minute preparation tips for NEET Physics Exam:

Solving NEET Physics Previous Year Question Papers and Sample Papers is the best way to prepare for the exam. This will help you identify the exam pattern and the type of questions asked in the past year exams.

Avoid learning any new topic

This is not the right time to prepare for any new topics in NEET Physics. Instead, revise all the topics which you have learnt earlier. Taking new topics in the last days of your preparation may increase your stress level and would result in confusion.

Revise and Practice

Start revising and practising for the topics you have already learnt. Start taking online test series and online mock tests. This will help you to increase your speed and accuracy while solving questions.

Stay Healthy

Take a healthy diet and proper sleep while preparing for NEET Physics Exam. The exam is in the scorching summers, so drink lots of water to keep your body hydrated. Avoid eating junk foods to stay fit for the exam.

Study from NCERT Books

As most of the questions in NEET Physics are asked from NCERT books, you need to study more from your NCERT Book. Do not skip any of the topics from NCERT Book.

Stay Positive

Keep your mind clear and positive while preparing for NEET Physics Exam. Take proper rest and relax your mind. Do activities like yoga or meditation, which will help you to stay relaxed and you would prepare well for the exam.

Hope, the above-mentioned preparation tips will ease out your NEET Physics Preparation and will also help you to overcome your fear for Physics subject.

If you need some help or have any queries related to this article, you can ask in the comment section given below. Stay updated on Eduncle for latest updates and notification.

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I can't improve my score even after I practiced more questions. What can I do please help me ??

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NEET 2023-24 Physics Numericals - Solve it Faster Now!

How to Solve Physics Numerical for NEET 2023-24: Shortcuts and Tricks

How to solve physics numerical problems fast.

NEET Aspirants always want to solve the Physics numerical in a lesser time span. In that case, they have to polish their mathematical skills as well as remember the formulas on tips.

What more does a candidate need to do? In this context, we are going to learn about some tricks and tips. Solving Physics numericals faster will not only save your time but will also make you efficient in calculations.

Solving the Physics Numerical at Faster Speed

NEET is the single medical entrance exam held for seeking admission in both government and private medical colleges across India. The NTA conducts tests on three Science subjects, namely Physics, Chemistry and Biology. Almost every NEET aspirant will agree to the fact that Physics happens to be the most challenging section of this medical entrance test. It is a more challenging section compared to the other two. The numerical problems of Physics asked in the NEET can put even the most brilliant students in a tough spot. However, it will not feel that difficult if you know how to solve physics numerical problems fast.

The article aims at offering useful information on the most important topics of Physics NEET 2022 and also acquaints you with ways to solve the questions smartly. Let us contribute a little towards your endeavour to crack NEET successfully.

NEET Physics Syllabus 2022

Topics of physics - class 11 for neet.

Physical-world and measurement

Laws of motion

Work, Energy and Power

Motion of systems of particles and rigid body

Gravitation

Properties of bulk matter

Thermodynamics

Behaviour of Perfect gas and Kinetic theory

Oscillations and Waves

Topics of Physics - Class 12 for NEET

Electrostatics

Current Electricity

Magnetic Effects of Current and Magnetism

Electromagnetic Induction and Alternating Currents

Electromagnetic waves

Dual Nature of Matter and Radiation

Atoms and Nuclei

Electronic Devices

NEET Physics: A Brief Outline on What to Expect

In the Physics section, you have 45 Multiple Choice Questions. The important Physics NEET topics or chapters include:

Laws of Motion

Modern Physics

Electrostatics and Magnetism

Current Electricity and Electromagnetic Induction

Heat and Thermodynamics

Theory-Based Questions or Problem-Solving Questions Generally Come from Chapters like:

System of Particle and Rigid Body

Magnetism and Magnetic Effect of Current and AC

Ray Optics and Optical Instruments

Thermo Dynamics

Remember, problem-solving questions carry a high weightage of marks, so ignoring them or committing mistakes in this part can cost you your seat in a reputed medical college for sure. Learning and practising some useful tricks to solve physics problems for NEET will be immensely helpful.

In 2019, NEET examinees found that around 60% of the total Physics questions had come from the NCERT syllabus . Almost half of the Physics questions were from Modern Physics and Mechanics.

Physics Short Tricks for NEET Aspirants

NEET aspirants will readily get access to shortcut tricks for physics numerical PDF online. Here, we also aim at offering some useful tips on how to solve physics numerically timely and correctly. The NEET candidate must understand the concepts appropriately so that he/she can quickly solve the problems.

Understanding the application of Theories is as necessary as memorizing formulae and theories. You can find a solution to Physics numerical problems once you know the basics of all the NEET chapters mentioned above.

Following the NCERT syllabus will be helpful. Scan through all the chapters along with the examples and questions.

Make revision notes of Physics for NEET for last-minute quick revision. Students can also make a separate list of important formulas of Physics .

Follow the best possible reference books for NEET.

Tips on Polishing Your Problem-Solving Skill

Read the question carefully to identify the concepts behind it. This is not just a trick but a guaranteed tip on sure success.

Once you realize the concept, it is time to note all the data given in the question asked.

Roll your eyes on the given options just once. At times, NEET top scorers find it easier to get the right answer without bothering or over guessing about which one, among the options, fits the question.

Decide on the method you can apply to get the answer and then deal with it accordingly.

In case the answer fails to match any of the given options, double-check to find the calculation mistakes. You can also adopt an alternative approach.

If time is not permitting re-checking, move on to the next question. Don’t be restless but also don’t waste time on a single question unnecessarily. Any physics shortcuts for NEET aim at saving time for other section questions.

Save Physics questions involving complicated calculations for later. Try others first.

See the units of answers given in the options and convert the Units accordingly. Don’t let it fool you.

Take Mock Tests (Online and Offline both) regularly for speeding up your problem-solving skills.

Solve and practice Previous Year Question Papers to prepare yourself for the exam better.

NEET Marking: A Glimpse

The opening and closing cut off marks for NEET candidates in the previous year (2019):

701-134 for unreserved candidates

133-120 for Unreserved PWD candidates

133-107 for Reserved candidates

133-107 for Reserved PWD

Negative marking is there for every wrong response you give. NEET examinees will score four marks for every correct answer. One point will keep deducting from the overall marks scored for every incorrect answer option you mark.

Hopefully, the information given here helps the NEET aspirants! In brief, it will not be wrong to say that practice and more practice is indeed the best way to solve Physics problems faster. Without regular practising, it is impossible to crack the NEET, regardless of what Physics shortcut tricks PDF for NEET you follow. There is no negative marking for unattempted questions, so if you are not sure of an answer, it is better to leave it.

How to Solve Physics Numerical for NEET 2020 - Shortcuts and Tricks

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Total number of atoms = 0.0092 x 6.022 x 10 23 = 0.054 x 10 23 atoms. Molecular mass of Water (H 2 O) is 18g/mol. There are 3 atoms in the molecule. So, 1g of water means 1/18 moles = 0.055 moles. Total number of atoms = 3 x 0.055 x 6.022 x 10 23 = 1.003 x 10 23 atoms. Thus 1g of butane has greatest number of atoms.
Molarity of a solution: Numerical problems with solutions
Example - 01: A solution of NaOH (molar mass 40 g mol-1) was prepared by dissolving 1.6 g of NaOH in 500 cm 3 of water. Calculate molarity of the NaOH solution. Given: Mass of NaOH = 1.6 g, molar mass of NaOH = 40 g mol-1, volume of water = 500 cm 3 = 500 mL = 0.5 L To Find: Molarity =? Solution: Number of moles = Given mass/ Molecular mass = 1.6 g/40 g mol-1 = 0.04 mol
Numerical Problems Based on Class 12 Chemistry Chapter 2 Solutions
Here we are providing numerical problems based on CBSE Class 12 Chemistry Chapter 2 Solutions. Students are suggested to go through each and every questions for better understanding of the chapter. Q.1. Calculate the mole fraction of water in a mixture of 12 g water, 108 g acetic acid and 92 ethanol. Ans. 0.15.
How to Solve Numerical Quickly in NEET Physics and Chemistry
Once you encounter a numerical problem, it is crucial to approach it systematically. Begin by carefully reading and understanding the problem statement. Pay attention to any given information and identify the relevant variables. Next, extract the crucial data and figures from the problem, which will lead you towards the solution.
How to Solve Any Physics Problem: 10 Steps (with Pictures)
Calm down. It is just a problem, not the end of the world! 2. Read through the problem once. If it is a long problem, read and understand it in parts till you get even a slight understanding of what is going on. 3. Draw a diagram. It cannot be emphasized enough how much easier a problem will be once it is drawn out.
How to Solve Physics Numericals for NEET 2024? Effective Tips
Step 4: Select the Appropriate Formula, Choose the formula that aligns with the identified physics concepts. Ensure the units of the known quantities match those required by the formula. Step 5: Break Down the Problem, If the numericals problem is complex, break it down into smaller, manageable steps.
How to solve Numerical in Physics & Chemistry for NEET 2020
Step 2 : Organize the given information and see the options. Sometimes you can easily recognise with rough calculation in mind which option is correct. This also helps in eliminating the wrong options and increases the chances of your answer being the correct one. Step 3 : Decide the approach and start attempting the question carefully and ...
CBSE Class 9 & 10: Solve Any Numerical Easily & Correctly in ...
Link to the Grand Numerical Session (Use Code PC001) - https://unacademy.com/class/numerical-ke-heroes-chemistry-physics-all-numericals-100/XNKOMW4HUnacademy...
How To Solve Numerical Problems Quickly In NEET Physics And Chemistry
How to Solve Numerical Problems Quickly in NEET Physics and Chemistry Before attempting any numerical problem, ensure you have a solid understanding of the underlying physics concepts. Without a clear grasp of the theory, solving numerical problems becomes challenging.
10 Best Tips to Study Physics for NEET + Problem Solving Strategy
Study with full concentration without any kind of distractions. Just reading theory will not do any good, you have to practice problems regularly in Physics. 2. Give complete attention in the class and make notes. Pay complete attention to what the teacher is teaching in the Physics class. Make class notes for NEET (include summaries, formulas ...
Thermodynamics problem solving tips and tricks
Take your time in mastering concepts of thermodynamics so you can solve thermodynamics problems easily. 5. Always make sure you Heat (Q) ,Internal Energy (U) and Work (W) with correct sign in equation U = Q−W U = Q − W. W is positive when work done by the system (Increase in Volume) W is negative when work done on the system (Decrease in ...
Complete Guide for NEET Physics: Tips to Solve Numericals
The best way to prepare for NEET Physics is to solve Previous Year Question Papers. Solving these NEET Physics Questions will help you identify the type of questions asked in the NEET Exam. It also improves your speed and accuracy. So, solve as many question papers as possible and get yourself prepared for the exam.
NEET 2023-24 Physics Numericals
The NTA conducts tests on three Science subjects, namely Physics, Chemistry and Biology. Almost every NEET aspirant will agree to the fact that Physics happens to be the most challenging section of this medical entrance test. It is a more challenging section compared to the other two. The numerical problems of Physics asked in the NEET can put ...
How to solve numerical, basic Calculation for Physics
Hey! Come and learn something new on Concept Ka Funda . Here's a course you might like: Basic calculation for Beginners by Prince kumar. https://dhfke.cou...
Structure Preserving Numerical Analysis of Reaction‐Diffusion Models
The numerical technique applied to find the solution of system by the coupled equation in and must preserve the positivity. The finite-difference technique is an important tool to solve the nonlinear model involving differential equations. Because finding the analytical solution of such models is not an easy task.

Chemistry Numericals

Calculate molecular formula - C6H12O6

Tips To Solve Numerical In Physics & Chemistry For NEET 2023

1. Examine questions

2. Rearrange the given data

3. Figuring out the procedure and executing

4. You have the answer

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Mole Concept - Numericals

Calculate the molar mass of the following substances.

Find number of moles of H 2 in 10g of H 2

How many moles is 12.044 x 10 23 atoms of He

How many moles are there in 52g of Helium?

Calculate the Molar Mass of Calcium Carbonate (CaCO 3 )

What is the mass of—

Convert into mole.

What is the mass of:

Calculate the number of molecules of sulphur (S 8 ) present in 16 g of solid sulphur.

3.42 g of sucrose are dissolved in 18 g of water in a beaker. The number of oxygen atoms in the solution are

If one mole of carbon atoms weighs 12 grams, what is the mass (in grams) of 1 atom of carbon?

If 1.4g of Calcium Oxide is formed by the complete decomposition of Calcium Carbonate, then the amount of Calcium Carbonate taken and the amount of Carbon Dioxide formed will be respectively?

Which of the following correctly represents 360 g of water?

Which of the following pairs have the same number of atoms?

Which of the following contains the greatest number of atoms?

Which sample contains the largest number of atoms?

How many moles of Magnesium Phosphate (Mg 3 (PO 4 ) 2 ) will contain 0.25 mole of oxygen atoms?

Which has the maximum number of molecules?

How many gram atoms of H and S are contained in 0.40 mole of H 2 S?

Which has more number of atoms, 100 grams of sodium or 100 grams of iron (given, atomic mass of Na = 23 u, Fe = 56 u)?

Calculate the number of moles and molecules in 22g of Acetic Acid.

24 g of Carbon reacts with some Oxygen to make 88g of Carbon Dioxide. Find out the amount of Oxygen used.

In 2 moles of acetaldehyde (CH 3 CHO) calculate the following

Calculate the number of aluminium ions present in 0.051 g of aluminium oxide. (Hint: The mass of an ion is the same as that of an atom of the same element. Atomic mass of Al = 27 u)

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Numerical Problems on Molarity

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How to Solve Numerical Problem Quickly in NEET Physics and Chemistry

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