NEET Chemistry Important Questions (Most Expected) with Solutions - Download PDF

NEET Chemistry Important Questions with Solutions

Here are some important questions based on NEET trends:

Ques 1: If the molar conductivity (Λm) of a 0.050 mol L⁻¹ solution of a monobasic weak acid is 90 S cm² mol⁻¹, its degree of dissociation will be [Λ°₊ = 349.6 S cm² mol⁻¹ and Λ°₋ = 50.4 S cm² mol⁻¹]

Options:
A. 0.215
B. 0.115
C. 0.125
D. 0.225

Correct Answer: D

Explanation:
Degree of dissociation (α) = Λm / Λ°
Λ° = 349.6 + 50.4 = 400
α = 90 / 400 = 0.225

Ques 2: Given two statements:
Statement I: A diatomic molecule with bond order zero is stable.
Statement II: Bond length increases with increase in bond order.

Options:
A. Statement I is false, Statement II is true
B. Both statements are true
C. Both statements are false
D. Statement I is true, Statement II is false

Correct Answer: C

Explanation:
Bond order zero molecules are unstable, and bond length decreases as bond order increases.

Ques 3: The ratio of wavelengths absorbed by a Hydrogen atom for transitions n=2→3 and n=4→6 is:

Options:
A. 1/4
B. 1/36
C. 1/16
D. 1/9

Correct Answer: A

Explanation:
Using Rydberg relation, energy difference determines wavelength; ratio simplifies to 1/4.

Ques 4: Correct order of wavelength absorbed by complexes:
[Co(NH₃)₆]³⁺ (A), [Co(CN)₆]³⁻ (B), [Cu(H₂O)₄]²⁺ (C), [Ti(H₂O)₆]³⁺ (D)

Options:
A. C < A < D < B
B. B < D < A < C
C. B < A < D < C
D. C < D < A < B

Correct Answer: C

Explanation:
Stronger ligands cause larger splitting → absorb shorter wavelength; CN⁻ is strongest ligand.

Ques 5: If rate constant k = 0.03 s⁻¹, time required for concentration to decrease from 7.2 to 0.9 mol L⁻¹ is:

Options:
A. 21.0 s
B. 69.3 s
C. 23.1 s
D. 210 s

Correct Answer: B

Explanation:
First-order: t = 2.303/k × log (a/a₀)
t = 2.303/0.03 × log(7.2/0.9) ≈ 69.3 s

Ques 6: The standard heat of formation of Ba²⁺ is:

Options:
A. +220.5 kcal/mol
B. –128.5 kcal/mol
C. –133.0 kcal/mol
D. +133.0 kcal/mol

Correct Answer: B

Explanation:
Using Hess’s law and given enthalpy values, result = –128.5 kcal/mol.

NEET Chemistry Important Questions Download PDF

Download the NEET Chemistry Important Questions PDF to make your preparation more systematic and revise them frequently. The PDF has selected questions based on previous year trends so that you can revise important topics in less time and also work on your problem-solving skills.

This PDF is good for daily practice and last-minute revision. It also lets you keep track of your studies by going back over concepts that need more attention.
How can the PDF be helpful for you?

• Revising key concepts in Chemistry
• Practice NEET MCQs based on the previous year pattern
• Improving your understanding & problem-solving skills
• Regular revision helps you to strengthen your weak areas.
• Gain confidence before mock tests and final examination.

Most Important Chapters for NEET 2027 Chemistry

Every chapter in the NEET Chemistry syllabus is important, but there are certain topics that consistently appear with a higher frequency of questions every year. By concentrating more on these chapters, you can improve your overall score and at the same time make your preparation more focused.
The following chapters have consistent weightage in previous NEET examinations and must be priority chapters in revision.

High-Weightage Chemistry Chapters

• Coordination Compounds
• Chemical Bonding and Molecular Structure
• Thermodynamics
• Solutions
• Structure of Atom
• Chemical Kinetics
• Hydrocarbons
• Organic Chemistry – Some Basic Principles and Techniques
• Haloalkanes and Haloarenes
• Alcohols, Phenols and Ethers

Along with these chapters, ensure that you complete the entire NCERT syllabus, as NEET frequently includes concept-based and statement-type questions directly or indirectly from NCERT textbooks.

Why Should You Practise NEET Chemistry Important Questions?

Practising important questions of NEET Chemistry is an ideal way to prepare for the exam. The questions have been prepared based on past years' trends and will enable you to learn concepts often covered, enhance problem-solving skills and help you prepare better.

Understand the Exam Pattern

Through regular practice, you will get a good idea about the type of questions asked, the level of difficulty and the entire exam pattern, giving you confidence during the exam.

Prioritise Weightage Topics

Questions considered important will give you an idea about the topics that carry high weightage in the NEET examination.

Understand NCERT Concepts Well

Almost all NEET Chemistry questions are from NCERT. Solving important questions improves conceptual clarity, , and reinforces key formulas, reactions and concepts.

Boost Speed and Accuracy
Regular practice will improve your calculation speed, reduce mistakes, help you manage your time and also give you confidence for the real exam.

How to Use NEET Chemistry Important Questions Effectively?

Question solving is only helpful when you learn from your mistakes and revise. Here are some easy tips that can help you prepare effectively.

Practice Questions Chapter Wise

Answer some important questions after you have completed each chapter of the NCERT book. Revise the NEET chemistry important formulas and concepts before answering the questions.

Make an Error Notebook

Make a notebook for all your incorrect answers, important formulas, reactions, and concepts. Revising this notebook will help you from making the same mistakes again.

Understand the Concept

Learn the concept of the answer rather than just learning the answer itself. Special emphasis should be laid on reaction mechanisms, assertion-reason questions, and concepts based on NCERT.

Regular Revision

Revisit the questions you have marked, solve the ones you had answered incorrectly and revise the important formulas and reactions.

NEET 2027 Chemistry Preparation Plan: 6-Month Strategy Using Important Questions

NEET Chemistry preparation becomes much simpler when one follows a schedule while studying for it, rather than depending on mere last-minute revision. The following is a 6-month schedule that will help you finish your syllabus and revise properly before your exam.

Month 1: Clear Your Fundamentals

Initially, finish all basic topics of NCERT and gain clarity on fundamental concepts. Solve important questions of each chapter once you have studied that chapter.

• NCERT Preparation is crucial.
• Learn about basic Physical and Organic Chemistry concepts
• Note down short points for revision
• Solve chapter-wise important questions consistently

Month 2: Revise Core Concepts

Do well in high marks chapters and solve questions of those chapters chapter-wise. Learn from your mistakes and maintain an error notebook.

• Complete major chapters of Physical and Inorganic Chemistry.
• Solve important questions after each chapter
• Weekly revise the formulas, reactions and concepts learned
• Update your error notebook

Month 3: Finish the Syllabus

Complete all the remaining chapters and start solving questions of different topics. It will make you better at concepts and problem-solving skills.

• Finish other topics of NEET Chemistry Syllabus
• Do important questions in a mix format
• Revision of all finished topics
• Focus on weaker topics

Month 4: Mock Tests and Previous Year Papers

Once you have covered the syllabus, begin practising questions from previous years and take complete mock tests in order to save your time in the exam.

• Weekly complete tests in Chemistry should be taken.
• Practice NEET Chemistry previous year questions.
• Analyse your errors after each test.
• Revision of important formulae and reactions.

Month 5: Revision of Weakness and Significant Topics

This entire month will go into revision of your weakness and significant topics.

• Revise NCERT extensively.
• Practice important questions marked in previous months.
• Focus on high weightage NEET chemistry chapters.
• Appear for NEET mock tests often.

Month 6: Final Month Before NEET 2027

In the final month, don’t begin to learn new topics. Just concentrate on revising the topics and important questions, solving mock tests and maintaining confidence.

• Revise short notes and NCERT high points
• Solve important questions and NEET previous year's question papers.
• Appear for full mock tests in exam like environment.
• This schedule will help NEET aspirants prepare systematically for NEET 2027 Chemistry important questions.

Tips from Experts to Score Well in NEET Chemistry 2027

There are some great ways that will help you get good scores in NEET Chemistry.

• It is advised that you cover the NCERT syllabus first and then move ahead.
• Practice important questions after each chapter.
• Revise formulas, named reactions and exceptions regularly.
• Solve important question sets and previous years questions.
• Take practice tests under simulated test conditions.
• Have an error notebook and review it every week.
• Increasing accuracy can reduce the negative marking.
• Revision should be consistent and not last-minute.