NEET Chemistry Question Paper 2025 PDF: Previous Year Papers (2024, 2023, 2022, 2021, 2020, 2019, 2018)

NEET 2025 Question Paper PDF

The NEET 2025 question paper PDF is an important resource for students preparing for the National Eligibility cum Entrance Test (NEET). This paper contains questions asked in the NEET 2025 Exam. By practising with the NEET 2025 question paper PDF, students can familiarise themselves with the exam pattern, difficulty level, and types of questions asked, boosting their confidence and preparation.

NEET Chemistry Question Paper 2025 Code (45, 46, 47, and 48) With Solutions

NEET 2024 Chemistry Question Paper PDF

The NEET 2024 Chemistry question paper helps students understand the latest exam pattern and the types of questions asked in the real test. By solving the 2024 paper, aspirants can analyse their preparation level and identify important topics. Below is the free PDF download of the NEET 2024 Chemistry question paper along with its solutions. The links to set wise NEET 2024 question paper PDF are given below:

Chemistry NEET Previous Year Questions PDF

The table below contains year-wise downloadable PDFs of NEET Chemistry question papers, helping students to analyse important chapters, frequently asked concepts, and the difficulty level of the questions.

NEET 2026 Chapter-Wise Weightage For Chemistry

Scoring full marks in chemistry is easy. It is possible when a candidate knows what his/her weaker section is and what’s the weightage of that particular section. The NEET Chemistry syllabus includes chapters from organic, inorganic, and Physical chemistry. Candidates can refer to the table below which mentions the NEET chapter-wise weightage for Chemistry to prepare well for the examination.

NEET 2026 Chemistry Syllabus With Weightage

The syllabus of NEET Chemistry is divided into Physical, Organic, and Inorganic Chemistry, with varying levels of focus across different chapters. The following table gives topic-wise weightage as per an analysis of NEET question papers of last five years. This analysis will help candidates to adopt a smart and strategic study plan.

The data is from past five years and chapters States of Matter, Hydrogen, The s-Block Element, Solid State, Surface Chemistry, Polymers, Environmental Chemistry, General Principles and Processes of Isolation of Elements are not in the NEET syllabus now

Frequently Asked Questions in NEET Chemistry

Below given are the important NEET chemistry questions asked in the examination. Candidates must read further to know more about the repeatedly asked questions in NEET Chemistry.

Question: If the rate constant for a first-order reaction is k, the time (t) required for the completion of 99% of the reaction is given by:

Option 1: t = 0.693k

Option 2: t = 6.909k

Option 3: t = 4.606k

Option 4: t = 2.303k

Answer: t = 4.606k

Solution:

The integrated rate law for a first-order reaction is given by:

$t={\displaystyle \frac{2.303}{k}}{\log }_{10}\left({\displaystyle \frac{a}{a-x}}\right)$

Given: $a=100\mathrm{\%}$, $x=90\mathrm{\%}$, hence $a-x=10\mathrm{\%}$.

Substituting these values into the equation:

$t={\displaystyle \frac{2.303}{k}}{\log }_{10}\left({\displaystyle \frac{100}{10}}\right)$

Since ${\log }_{10}\left({\displaystyle \frac{100}{10}}\right)={\log }_{10}(10)=1$,

$t={\displaystyle \frac{2.303}{k}}\times 1={\displaystyle \frac{2.303}{k}}$

Thus, the time required for 90\% completion is:

$t={\displaystyle \frac{2.303}{k}}$
Question: The correct order of atomic radii in group 13 elements is:

Option 1:

B < Ga < Al < Tl < In

Option 2:

B < Al < Ga < In < Tl

Option 3:

B < AI < In < Ga < Tl

Option 4:

B < Ga < Al < In < Tl

Answer: B < Ga < Al < In < Tl

Solution:

As we learnt in the topic of Ionisation Energy of the Boron Family:

It does not decrease regularly down the group.

This is because there is a discontinuity between Al and Ga, and between In and Tl, due to the inability of d and f electrons (which have a low screening effect) to effectively compensate for the increase in nuclear charge.

In Group 13, the trend in atomic radius is also not regular due to transition contraction.

Hence, option number (4) is correct.

NEET 2026 Best Books For Chemistry

Scoring high in the NEET Chemistry section requires not just hard work, but also the right study material. Choosing the best books for NEET Chemistry is one of the most important steps in a smart preparation strategy. Once a student selects the right resources, a major part of the preparation becomes more focused and efficient.

Below is a list of the NEET books for chemistry for NEET 2026, to help build conceptual clarity, strengthen problem-solving skills, and practice NEET-level questions effectively:

• NCERT Chemistry textbooks for Class XI and XII

• Physical Chemistry by OP Tandon

• ABC of Chemistry for Classes 11 and 12 by Modern

• Concise Inorganic Chemistry by JD Lee

• Dinesh Chemistry Guide

• Practice books by VK Jaiswal (Inorganic), MS Chauhan (Organic) and N Awasthi (Physical)

Importance Of NEET Chemistry Question Papers With Answers

Chemistry is a less tricky section thus, candidates can score higher marks in it. Practising the concepts of chemistry through the NEET question paper is important to boost confidence while also having an idea of the level of difficulty of the questions asked. Its advantages are:

• With the question-and-answer approach, covering lengthy topics becomes easier to learn.

• It's easier to remember important formulae and IUPAC nomenclatures.

• Gives an idea of the type of questions asked in the exam.

• Candidates can figure out their weak concepts and focus on them.

• Practising the NEET Chemistry question paper improves the candidate’s time management skills.