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CBSE Previous Year Question Papers Class 12 Chemistry - PDF Download

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CBSE Previous Year Question Papers for Class 12 Chemistry with Solution PDFs for Class 12 Chemistry helps you to show a better overview of your board examination. You will get well versed with the CBSE exam pattern, types of questions asked in the exam and weightage of marks distribution. Also, you will learn step-by-step answer-writing skills, which will help them fetch more marks.

Students must practice these previous years’ Class 12 Chemistry papers to understand question paper patterns in-depth. Also, they will get the best version of the important topics that are likely to be asked in the exam. Practising these CBSE Previous Year Question Papers for Class 12 Chemistry will boost the confidence level of students and help them ace the exam.

We hope students have found this information on “CBSE Previous Year Question Papers Class 12 Chemistry” useful for student’s exam preparation. Keep learning and stay tuned for further updates on CBSE official website and other competitive exams.

For subjects like Chemistry, you need to have a conceptual understanding of the subject, or else they can't score good marks in the exams. Chemistry is a subject that is considered as moderate to difficult in the context of equations and different concepts that are hard to remember. A strong knowledge base is compulsory to understand higher class Chemistry. A student without a strong foundation in Chemistry can find it very difficult to understand the subject in a higher class. 

The easiest approach to deal with this problem is to revise CBSE Class 12 Chemistry Previous Year Question Papers, which will assist students in learning about different areas of Chemistry. Chemistry Class 12 CBSE previous year question paper gives students an in-depth understanding of the topic, making test preparation more effective and productive. By solving these questions, students gain confidence and do not dread encountering challenging problems in tests.

CBSE Class 12 Chemistry can be categorized into three parts organic, inorganic and physical chemistry. Since, there are too many chemical equations, formulas and elements that are included in each chapter, it becomes very confusing and difficult at the same time to remember all of them. The best way to come out from this situation is to practice CBSE Class 12 Chemistry Previous Year Question Papers which will help the students in gaining knowledge on different aspects of Chemistry.

By practising these questions, students become more confident and they will not fear facing difficult questions that might come in exams. Here, our team has provided solved PDFs of Class 12 Chemistry Previous Year Question Papers to help you with your preparation. You can download the free PDFs of the year-wise question papers and start your preparation soon.

How to Solve Class 12 Chemistry Previous Year Question Papers?

To effectively solve Class 12 Chemistry previous year question papers:

Understand Syllabus: Familiarize yourself with the syllabus to identify the topics covered.

Organize Study Material: Arrange your study material according to the syllabus for systematic preparation.

Time Management: Allocate time for each section based on question weightage. Practice time-bound solving.

Regular Practice: Solve papers regularly to enhance speed and accuracy. Identify weak areas for targeted improvement.

Review Mistakes: Analyze errors made during practice. This helps in recognizing patterns and avoiding similar mistakes in the future.

Refer Textbooks: Use textbooks to clarify doubts and gain a deeper understanding of concepts.

Mock Tests: Take full-length mock tests to simulate exam conditions and improve time management skills.

Revision: Regularly revise formulas, reactions, and key concepts to reinforce memory.

Seek Help: If you face challenges, don't hesitate to seek help from teachers, classmates, or online resources.

Remember, consistent practice and a strategic approach are key to mastering Class 12 Chemistry.

Benefits of Solving CBSE Class 12 Chemistry last Year Question Papers 

An overview of what type of questions to expect in the exam: No matter what type of exam you are attending, whether it be central board, state boards, professional entrance exams, University level exams, or simple school tests, it is always important to gain insight into questions by solving past papers. It offers a sneak peek into the pattern of question papers.

It also helps in gaining knowledge about the format of a questionnaire asked in boards.

One of the most effective ways to get on the top of your revision game: Previous year’s questionnaire is a gold mine for those students who want a thorough revision. It is one of the best way to revise all the information one has read in books.

Question papers from last year give you access to top-class revision questions in the same format as you would attend in the given exam. This will also make your brain think in the same pattern as you would prepare for the board exam questions paper.

Making a check-list of questions repeatedly asked previous question papers: Moreover, observing the general trend in which questions are being asked.

Students can get an idea easily about the chance of getting a question repeated by listing down the questions asked multiple times for the upcoming test.

There is no full-proof way to predict if a question will be asked in the same manner as asked in the last years but mostly, the same topics get repeated every year because of the emphasis put on those sections of a chapter.

However, it is sufficient enough to practice, revise, and get an insight through solving these question papers before attempting any exam. It can guarantee a decent level of assurance about what your scores are going to achieve in a test.

Practicing time management through solving past year question papers: It will not only help you to boost your confidence level while attempting an exam but also helps you to practice good time management habits. You need to pass an exam to finish a question well within the time limits in the given time constraints.

Class 12 Chemistry Question Paper Important Topics 


Chapter 1: Solid State 

Important Topics:

1. Number of octahedral voids = Number of atoms and Number of tetrahedral voids = Twice the number of atoms

2. For unit cell dimension the important formula is M = dNaa3/ z

3. Imperfections in solids

Chapter 2: Solutions 

Important Topics:

1. Raoult’s law

2. Dalton’s law of partial pressure

3. Henry’s law

4. Mass % = (Mass of component in solution/ Total mass of the solution) ✕ 100

5. Volume % = (Volume of component in solution/ Total volume of the solution) ✕ 100

6. ppm = (No. of parts of the component/ Total no. of parts of all components of solution) ✕100

7. Mole fraction = No. of moles of component/ Total no. of moles of all components

8. Molarity = (Moles of solute/ volume of solution in litres)

9. Molality = Moles of solute/ Mass of solvent in kg

10. Relative Lowering of vapour pressure

11. Elevation of boiling point

12. Depression of freezing point

13. Osmosis and Osmotic Pressure

14. Van’t Hoff Factor

Chapter 3: Electrochemistry

Important Topics:

1. Type of cells:

 a) Electrochemical cell / Galvanic cell

 b) Electrolytic cell

2. Electrode potential

3. Standard electrode potential

4. Anode

5. Cathode

6. Cell potential

7. Cell electromotive force (emf)

8. SHE (Standard Hydrogen Electrode)

9. Nernst equation

10. Relation between cell potential and Gibbs energy:

11. Relation between equilibrium constant and Gibbs energy

12. Resistance(R)

13. Resistivity

14. Specific conductance/Conductivity

15. Molar conductivity

16. Molar Conductivity for Strong Electrolytes

17. Molar Conductivity for Weak Electrolytes

18. Kohlrausch law of independent migration of ions

19. Faraday’s law of electrolysis

20. Types of electrodes

 a) Inert

 b) Active

21. Batteries:

 a) Primary

 b) Secondary

22. Corrosion

23. Hydrogen Economy

Chapter 4 – Chemical Kinetics

Important Topics:

1. First Order Reaction Kinetics

2. Arrhenius Equation

3. Order and Molecularity

Chapter 5: Surface Chemistry

 Important Topics:

1. Distinction between adsorption and absorption

2. Types of Adsorption

3. Freundlich adsorption isotherm

 a) Adsorption from Solution Phase

4. Colloids

5. Emulsions


Chapter 6: General Principles and Processes of Isolations of Elements

Important Topics:

1. Metallurgy

2. Ellingham Diagram

3. Mond process for refining nickel

4. Van Arkel Method for refining zirconium or titanium

Chapter 7: The p-Block Elements

Important Topics:

1. Inert pair effect

2. Disproportionation

3. Non-metallic hydrides

4. Colour of halogen compounds

5. Non-metallic halides

6. Catenation

7. Interhalogen compounds

8. Structures of Oxoacids: Phosphorus and Sulphur

9. Structures of Fluoride: Sulphur, xenon, bromine

10. Basicity of group 15 elements

11. Structures of PCl5, H2SO3, H2SO4, H2S2O8, H2S2O7, HOCl, HClO2, HClO34, N2

Chapter 8: The d- and f-block Elements

Important Topics:

1. d-Block elements

2. f-Block elements

3. Actinoid

4. Lanthanoid Contraction

5. Actinoid Contraction

Chapter 9: Coordination Compounds

 Important Topics:

1. Coordination Compounds

2. Coordination Entity

3. Central Atom or Ion

4. Ligands

5. Coordination Number

6. Coordination Sphere

7. Coordination Polyhedron

8. Oxidation Number of Central Atom

9. Homoleptic complexes

10. Heteroleptic complexes

11. Werner’s theory

12. Valence bond theory

13. Crystal-field theory


(Chapter 10 to Chapter 16)

 Important Topics:

1. IUPAC Nomenclature questions

2. Name reactions: Important name reactions which have been asked previously are Sandmeyer reaction, Williamson synthesis, Riemer-Tiemann reaction, Kolbe’s reaction, Aldol Condensation, Cannizzaro Reaction, Clemmensen Reduction reaction, Hoffmann Bromamide reaction, Coupling reaction. So,we advise you to revise these reactions.

3. Distinction test: The distinction tests are usually asked between:

4. Aliphatic and aromatic compounds

5. Compounds having two different functional groups

6. Compounds having the same functional group but different arrangement of atoms.

7. Conversions: Conversion based questions are surely going to come in exams. Remember there can be multiple steps to reach the final product but the shortest and feasible steps have to be written in the answer-sheet.

Class 12 Chemistry Question Paper Exam Pattern

Exam Patterns and Marking Schemes are important for both students and teachers to strengthen their preparation for examinations and ensure that the preparation is right, authentic, and going in the correct direction, respectively. This webpage presents an elaborative analysis of the CBSE Class 12 Chemistry Exam Pattern with Marks Distribution. You can scroll below to check the CBSE Class 12 Chemistry Exam Pattern 2024.

This paper design will inform students about the main objectives of the question paper in the examination. CBSE Class 12 Chemistry Question Paper will test the students on the following grounds, as mentioned in the table down below. CBSE Board Exams are designed to evaluate the academic progress and understanding of students while testing them on some skills.

The Central Board of Secondary Education i.e CBSE has also released the blueprint and marking scheme for the Class 12 Chemistry Board Exam 2024. In paper is divided into five sections with 35 questions for 70 marks and the complete exam pattern that has been followed is as follows- 

1. Section A has of 18 Questions carrying 1 mark each [Multiple Choice Questions]

2. Section B has of 7 questions carrying 2 marks each [Very Short Answer Questions]

3. Section C holds of 5 questions carrying 3 marks each [Short Answer Questions]

4. Section D holds of 2 Questions carrying 4 marks each [Case Based Questions]

5. Section E has of 2 Questions carrying 5 marks each [Long Answer Questions]


Type of Question

No of Questions

Total Marks


Multiple-Choice Questions (MCQs)/ Assertion-Reasoning



1 x 16 = 16


Short Answer Questions


2 x 5 = 10


Short Answer Questions


3 x 7 = 21


Case-based Questions


4 x 2 = 8


Long Answer Questions


5 x 3 = 15

Here is the Structure for CBSE Class 12 Chemistry that has been presented to students and teachers. This will ensure the timely completion of the curriculum, leaving sufficient space for revision for students. You can prepare for your examinations accordingly. Chapters with the highest marks should be on priority in the decreasing order.



No. of Periods











Chemical Kinetics




d and f block elements




Coordination Compounds




Haloalkanes and Haloarenes




Alcohols, Ethers and Phenols




Aldehydes, Ketones and Carboxylic Acids













Preparation Tips for CBSE Class 12 Chemistry Examination

Here are some of the important preparation tips to help you with your CBSE Class 12 Chemistry:

Going through the entire NCERT Chemistry textbook is a must for all the candidates to clear their basic concepts on each topic.

Most of the chemistry questions and numericals that are asked in the board exam are from the NCERT textbook, therefore you must solve all the NCERT Solutions to score well.

For the inorganic chemistry part, it is advisable for the students to have a look at the CBSE previous years’ question papers to get an idea about the topic which has greater weightage in the Class 12 Board Exam.

Students should give more emphasis on topics that require regular revision such as the p-block elements and coordination chemistry. 

Make a separate note for all the important chemical formulas, equations and chemical properties of elements.

FAQs on CBSE Previous Year Question Papers Class 12 Chemistry PDF Free Solutions 

Question 1: What are CBSE Previous Year Question Papers?

Answer: CBSE Previous Year Question Papers are the question papers of Class 12 Chemistry examinations which were conducted by the Central Board of Secondary Education (CBSE) in previous years. CBSE will provide a valuable resource for students to understand the exam pattern, marking scheme, and types of questions asked.

Question 2:What is the significance of solving CBSE Previous Year Question Papers?

Solving CBSE Previous Year Question Papers is highly beneficial for any of you. It helps you familiarize yourself with the exam pattern, understand the weightage of different topics, and practice answering questions within the allotted time. It also helps you in identifying strengths and weaknesses, allowing for focused preparation.


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