NEET UG · Chemistry · Class 11

States of Matter: NEET previous year questions

This chapter is not in the NEET UG 2026 syllabus. It had 10 questions from 2017 to 2023; they are kept here for reference.

Asked in 10 years: 10; 6 of 10 papers
10-year average: 0.9; a paper · 0.0 since 2024 -1.4
Typical range: 0–2; questions a paper; fewest 0, most 2
Syllabus: Dropped; NEET UG 2026 syllabus

Typical range (fact)
10-year average (fact)
Weighted estimate (model)

Typical range: questions per paper in the middle eight of the ten papers, leaving out the single highest and lowest year (about the 10th to 90th percentile), each paper scaled to 180 questions. The ten-year average and the range are historical fact. The weighted estimate is a model: each paper's share, with recent papers counting more (half-life three years), and dropped syllabus removed. It is a guide to effort, not a forecast.

Questions per year

Kind of question

SHARE OF 10 YEARS

Calculation30%
Concept30%
Recall20%
Figure-based20%

Most common asks: numerical (3); compare liquefaction using van der waals a (1); definition recall of van der waals correction (1).

Profile

This chapter in numbers

Where it ranks, how steady it is, and what it costs to study.

Syllabus: Dropped; not in NEET UG 2026
Last asked: 2023
Share of the paper: 0.5%; ten-year average
Busiest year: 2018; 2 questions
Year to year: Steady; varies by about 0.8 questions
Long-run direction: -0.10; questions per paper, per year
Easy questions: 60%; 34% of ideas rated hard
With a figure: 20%; graph, diagram or structure
Foundation for others: 26%; of its ideas are used in other chapters

Difficulty, year by year

Each question rated easy, medium or hard against NCERT.

2017
20182
20191
20201
20212
20222
20232
2024
2025
2026

Easy
Medium
Hard

What it asks you to do

SHARE OF QUESTIONS

Concept30%
Recall20%
Calculation20%
Data or graph20%
Multi-step10%

Coverage

How much of the chapter NEET has used

We split the chapter into 81 ideas. In ten years NEET built a question around 4 of them. Most of the chapter has never been asked, which is why learning it whole beats memorising past questions.

Asked as the main idea: 4
Touched on in a question: 10
Never asked: 67

Topics

What repeats, topic by topic

Questions per topic in each year's paper. Topics that come every year are worth learning first.

Ideal Gas Law · Every year10
211222

’17’18’19’20’21’22’23’24’25’26

Topic	2017	’18	2019	’20	2021	’22	2023	’24	2025	’26	Total
Ideal Gas LawEvery year	·	2	1	1	2	2	2	·	·	·	10

02+questions in that year’s paper

Drill down

Topic, idea, question

Open a topic to see every idea NEET tested inside it, then open an idea to read the questions. Each row shows its ten papers.

topicAskedShareYears’17’18’19’20’21’22’23’24’25’26

Open10 · 100%100%6/102222
7 ideas inside
- Repeated2 · 20%20%2/10
- Repeated2 · 20%20%2/10
- 2 · 20%20%1/102
- 1 · 10%10%1/10
- 1 · 10%10%1/10
- 1 · 10%10%1/10
- 1 · 10%10%1/10

Squares are the ten papers, 2017 to 2026; darker means more questions. Share is of the level above.

Ideas

The exact ideas NEET has asked

Inside the topics, 7 different ideas were tested. These came more than once, or are new since 2024.

Dalton's Law of Partial Pressures2×
numerical
Ideal Gas Equation2×
numerical
van der Waals Equation2×
compare liquefaction using van der waals a

Idea	Times	Usually asked as
Dalton's Law of Partial Pressuresnumerical	2	Numerical
Ideal Gas Equationnumerical	2	Numerical
van der Waals Equationcompare liquefaction using van der waals a	2	One-line MCQ

Every question

States of Matter questions, year by year

The opening words of each question as it appeared in the official paper.

NEET 20232 questions

Q72Intermolecular forces are forces of attraction and repulsion between interacting particles that will include : A. dipole - dipole forces.…Other
Q77Which amongst the following options is correct graphical representation of Boyle's Law?Figure-based · figure

NEET 20222 questions

Q60Which one is not correct mathematical equation for Dalton's Law of partial pressure ? Here p = total pressure of gaseous mixtureOne-line MCQ
Q99A 10.0 L flask contains 64 g of oxygen at 27°C. (Assume $\mathrm{O_2}$ gas is behaving ideally). The pressure inside the flask in bar is…Numerical

NEET 20212 questions

Q70Choose the correct option for graphical representation of Boyle's law, which shows a graph of pressure vs. volume of a gas at different…Figure-based · figure
Q90Choose the correct option for the total pressure (in atm.) in a mixture of 4 g $\mathrm{O_2}$ and 2 g $\mathrm{H_2}$ confined in a total…Numerical

NEET 20201 question

Q110A mixture of $\mathrm{N_2}$ and Ar gases in a cylinder contains 7 g of $\mathrm{N_2}$ and 8 g of Ar. If the total pressure of the mixture…Numerical

NEET 20191 question

Q84A gas at 350 K and 15 bar has molar volume 20 percent smaller than that for an ideal gas under the same conditions. The correct option…One-line MCQ

NEET 20182 questions

Q76Given van der Waals constant for $\mathrm{NH_3}$ , $\mathrm{H_2}$ , $\mathrm{O_2}$ and $\mathrm{CO_2}$ are respectively 4.17, 0.244, 1.36…One-line MCQ
Q86The correction factor 'a' to the ideal gas equation corresponds toOne-line MCQ

Questions from the official NEET UG papers published by NTA (CBSE before 2019). Topic and idea tags, counts and notes are Lumi’s.

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