CBSE Class 12 Chemistry Sample Paper 2021 Set A

Chemistry
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Read and download the CBSE Class 12 Chemistry Sample Paper 2021 Set A, designed by expert teachers according to the latest 2025-26 curriculum and examination pattern issued by CBSE, NCERT, and KVS. These Class 12 Chemistry sample papers include detailed step-by-step solutions, helping students to practice and evaluate their performance against the most recent marking schemes.

Solved Sample Paper for Class 12 Chemistry PDF

Our Class 12 Chemistry model papers are important for understanding the weightage of different chapters and the difficulty level of expected questions. By solving these guess papers Class 12 students can identify weak areas and improve time management. We also suggest referring to our Class 12 Chemistry Question Papers of previous years to further strengthen your exam preparation.

Class 12 Chemistry Sample Paper with Solutions

Pick out the correct option:
 
1 The weakest intermolecular force is present in
a) Thermoplastics
b) Fibers
c) Elastomers
d) Thermosetting plastics
 
2 Among the following, which is classified as neurologically active drugs?
a) Antiseptic
b) Analgesic
c) Antifertility
d) Antacids
 
3 The molal depression constant depends on
a) Nature of solvent
b) Nature of solute
c) Vapour pressure of solution
d) Number of particles formed in the solution
 
4 Which of the following solutions behave ideally?
a) Benzene and toluene
b) Ethanol and acetone
c) Carbon dis sulphide and acetone
d) Phenol and aniline
 
5 Artificial sweetener that has its use limited to cold food is
a) Saccharin
b) Sucralose
c) Alitame
d) Aspartame
 
6 To a Daniel cell, if an external voltage of 1.1V is applied
a) Electrons flow from zinc to copper and current flows from copper to zinc
b) Electrons flow from copper to zinc and current flows from zinc to copper
c) No flow of electrons or current
d) Zinc dissolves at anode and copper deposits at cathode
7 Phosgene is
a) Chloroform
b) Carbonyl chloride
c) Iodoform
d) Methylene chloride
 
8 Which of the following metals is obtained by leaching the ore with dilute cyanide solution?
a) Silver
b) Titanium
c) Nickel
d) Aluminium
 
9 The following cannot be used to prevent corrosion
a) Bisphenol
b) Tin
c) Zinc
d) Carbon steel
 
10 In an electrochemical cell
a) Potential energy is converted to chemical energy
b) Chemical energy is converted to potential energy
c) Chemical energy is converted into electric energy
d) Electrical energy is used to carry out a chemical reaction in the cell.
 
Fill in the blanks:
 
11 Carbon attached to four different atoms/groups is called………… 
 
12 ------detergent has germicidal properties. 
 
13 Purest form of iron is……… 
 
14 ------is added to raw rubber (to form crosslinks) along with other appropriate additives to form vulcanized rubber.
 
15 Constant boiling mixtures are termed as…….. 
Answer the following questions:
 
16 Arrange the following in order of increasing reactivity in nucleophilic substitution reaction:
CH3F, CH3I, CH3Br, CH3Cl
 
17 Give one advantage of H2-O2 fuel cell. 
 
18 Draw the structure of 4-methoxy acetophenone. 
 
19 How is KH of a gas in a liquid related to its solubility? 
 
20 What are the main constituents of Dettol? 
 
21 Write the reaction taking place at the anode and cathode of lead storage battery.
OR
a) What is the role of salt bridge?
b) Predict the product of electrolysis of aqueous solution of silver nitrate using silver lectrodes.
 
22 What are biodegradable polymers? Name the monomers of a biodegradable polyamide. 
 
23 What is the role of
a) Sodium cyanide in the froth floatation process
b) Calcium oxide in the extraction of iron from its ore?
 
24 Give reason
a) Vinyl halides are inert to nucleophilic substitution reaction
b) (dl)-butan-2-ol is optically inactive
 
25 Convert
a) Benzene to biphenyl
b) 2-Bromopropane to 1-Bromopropane
 
26 a) Give a chemical test to distinguish between
2-Methylpropanol and 2-Methyl propan-2-ol.
b) Write the IUPAC name of o-cresol.
 
27 A solution was formed by mixing chloroform with acetone.
a) Identify the type of deviation shown by this solution? Give reason for your choice.
b) Give one characteristic of this type of solution.
OR
i) Define reverse osmosis.
ii) What happens when red blood cells are placed in 0.5% sodium chloride solution?
 
28 Write the structure of repeating monomeric unit of
a) Terylene
b) Neoprene
c) Teflon
 
29 a) What are enantiomers?
Draw the structures of the possible enantiomers of 3-Methylpent-1-ene.
b) State Saytzeff rule.
 
30 Write the mechanism of dehydration of ethanol at 443K. 
 
31 Mention the action of the following on human body in bringing relief from a disease
a) Brompheniramine
b) Aspirin
c) Equanil
OR
Explain the following with an example
i. Antacids
ii. Disinfectant
iii. Narrow spectrum antibiotics
 
32 Explain
a) Mond’s process
b) Zone refining
c) Column chromatography for purification of rare elements.
 
33 How many mL of 0.1M HCl is required to react completely with 1g mixture of sodium carbonate and sodium hydrogen carbonate containing equimolar amounts of the two?
OR
Calculate the mass of a non-volatile solute (molar mass 40g/mol) which should be dissolved in 114g octane (molar mass 114 g/mol) to reduce the vapour pressure to 80%.
 

Please click on below link to download CBSE Class 12 Chemistry Sample Paper 2021 Set A

2025
CBSE Class 12 Chemistry 2025 Sample Paper Solved Set 1
CBSE Class 12 Chemistry 2025 Sample Paper Solved Set 2
CBSE Class 12 Chemistry 2025 Sample Paper Solved Set 3
CBSE Class 12 Chemistry 2025 Sample Paper Solved Set 4
CBSE Class 12 Chemistry 2025 Sample Paper Solved Set 5
CBSE Class 12 Chemistry 2025 Sample Paper Solved Set 6
CBSE Class 12 Chemistry 2025 Sample Paper Solved Set 7
CBSE Class 12 Chemistry Sample Paper 2025 Solved
2024
CBSE Class 12 Chemistry Sample Paper 2024
2023
CBSE Class 12 Chemistry Sample Paper 2023
2022
CBSE Class 12 Chemistry Sample Paper 2022 Set A Solved
CBSE Class 12 Chemistry Sample Paper 2022 Set B Solved
CBSE Class 12 Chemistry Sample Paper 2022 Set C
2021
CBSE Class 12 Chemistry Sample Paper 2021 Set A
CBSE Class 12 Chemistry Sample Paper 2021 Set B
CBSE Class 12 Chemistry Sample Paper 2021 Solved Set A
CBSE Class 12 Chemistry Sample Paper 2021 Solved Set B
CBSE Class 12 Chemistry Sample Paper 2021 Solved Set C
2020
CBSE Class 12 Chemistry Boards 2020 Sample Paper Solved
CBSE Class 12 Chemistry Sample Paper 2020 Solved Set A
CBSE Class 12 Chemistry Sample Paper 2020 Solved Set B
CBSE Class 12 Chemistry Sample Paper 2020 Solved Set C
2019
CBSE Class 12 Chemistry Sample Paper 2019 Solved
2018
CBSE Class 12 Chemistry Sample paper 2018 Set A
CBSE Class 12 Chemistry Sample paper 2018 Set B
2017
CBSE Class 12 Chemistry Sample paper 2017 Set A
CBSE Class 12 Chemistry Sample paper 2017 Set B
CBSE Class 12 Chemistry Sample paper 2017 Set C
CBSE Class 12 Chemistry Sample paper 2017 Set D
CBSE Class 12 Chemistry Sample paper 2017 Solved Set A
2015
CBSE Class 12 Chemistry Sample paper 2015 Set A
CBSE Class 12 Chemistry Sample paper 2015 Set B
CBSE Class 12 Chemistry Sample paper 2015 Set C
CBSE Class 12 Chemistry Sample paper 2015 Set D
CBSE Class 12 Chemistry Sample paper 2015 Solved Set A
CBSE Class 12 Chemistry Sample paper 2015 Solved Set B
CBSE Class 12 Chemistry Sample paper 2015 Solved Set C
CBSE Class 12 Chemistry Sample paper 2015 Solved Set D
CBSE Class 12 Chemistry Sample paper 2015 Solved Set E
2014
CBSE Class 12 Chemistry Sample paper 2014 Set A
CBSE Class 12 Chemistry Sample paper 2014 Set B
CBSE Class 12 Chemistry Sample paper 2014 Set C
CBSE Class 12 Chemistry Sample paper 2014 Set D
CBSE Class 12 Chemistry Sample paper 2014 Set E
CBSE Class 12 Chemistry Sample paper 2014 Set F
CBSE Class 12 Chemistry Sample paper 2014 Set G
CBSE Class 12 Chemistry Sample paper 2014 Set Solved A
2013
CBSE Class 12 Chemistry Sample paper 2013 Set A
CBSE Class 12 Chemistry Sample paper 2013 Set B
CBSE Class 12 Chemistry Sample paper 2013 Set C
CBSE Class 12 Chemistry Sample paper 2013 Set D
CBSE Class 12 Chemistry Sample paper 2013 Set E
CBSE Class 12 Chemistry Sample paper 2013 Set F
CBSE Class 12 Chemistry Sample paper 2013 Set G
2012
CBSE Class 12 Chemistry Sample paper 2012 Set A
CBSE Class 12 Chemistry Sample paper 2012 Set B
CBSE Class 12 Chemistry Sample paper 2012 Set C
CBSE Class 12 Chemistry Sample paper 2012 Set D
CBSE Class 12 Chemistry Sample paper 2012 Set E
CBSE Class 12 Chemistry Sample paper 2012 Set F
CBSE Class 12 Chemistry Sample paper 2012 Set G
CBSE Class 12 Chemistry Sample paper 2012 Solved Set A
CBSE Class 12 Chemistry Sample paper 2012 Solved Set B
CBSE Class 12 Chemistry Sample paper 2012 Solved Set C
2011
CBSE Class 12 Chemistry Sample paper 2011 Set A
CBSE Class 12 Chemistry Sample paper 2011 Set B
CBSE Class 12 Chemistry Sample paper 2011 Set C
CBSE Class 12 Chemistry Sample paper 2011 Set D
CBSE Class 12 Chemistry Sample paper 2011 Solved Set A
CBSE Class 12 Chemistry Sample paper 2011 Solved Set B
CBSE Class 12 Chemistry Sample paper 2011 Solved Set C
2010
CBSE Class 12 Chemistry Sample paper 2010 Set A
CBSE Class 12 Chemistry Sample paper 2010 Solved Set A
2009
CBSE Class 12 Chemistry Sample paper 2009 Solved Set A
CBSE Class 12 Chemistry Sample paper 2009 Solved Set B
* More Sample Papers
CBSE Class 12 Chemistry Sample Paper Set A
CBSE Class 12 Chemistry Sample Paper Set B Solved
CBSE Class 12 Chemistry Sample Paper Set C Solved

Important Practice Resources for Class 12 Chemistry

How to download CBSE Class 12 Chemistry Sample Paper 2021 Set A in PDF?

Students can easily download the CBSE Class 12 Chemistry Sample Paper 2021 Set A from our website to prepare for their upcoming examinations. To score high marks, it is important for Class 12 students to understand the exaact pattern as per which teachers design the question papers. We strongly suggest that you practice these latest sample papers for Chemistry and solve different types of questions that are expected to come this year. You can downloadin PDF format so that you can practice offline. We also recommend that Class 12 students solve these papers actual exam conditions at home.

Why should you solve CBSE Class 12 Chemistry Sample Paper 2021 Set A?

Practicing these model papers has several benefits for Class 12 students:

  • New Question Bank: This set has fresh questions for Chemistry which are different from previous years.
  • Exam Pattern Knowledge: Solving more sets will help you to understand the weightage of each chapter in Class 12 and also the type of questions asked.
  • Identify Weak Areas: Comparing your score in each set to find out topics in Class 12 Chemistry for which you need hard work.
  • Speed and Accuracy: Attempting MCQ questions and long-form problems for Class 12 Chemistry makes you faster and better and you will be able to finish your exam on time.

What should you do after solving CBSE Class 12 Chemistry Sample Paper 2021 Set A?

  1. Check Your Work: Match your answers with the solutions given by our teachers in the Chemistry Sample Paper PDF.
  2. Learn from Mistakes: Class 12 students should focus on the questions which you solved incorrectly and understand the error.
  3. Revision: If you find a question difficult you shoul refer to NCERT book for Class 12 Chemistry to understand concepts and then try the question again.
  4. Continuous Practice: Solve multiple sets of Chemistry sample papers from studiestoday.com to build confidence before the CBSE exams.
Where can I download the PDF for CBSE Class 12 Chemistry Sample Paper 2021 Set A?

You can download the complete PDF for CBSE Class 12 Chemistry Sample Paper 2021 Set A for free from StudiesToday.com. Our resources for Class 12 Chemistry are updated for the latest academic session and follow the official exam pattern.

Are solutions provided for CBSE Class 12 Chemistry Sample Paper 2021 Set A?

Yes, CBSE Class 12 Chemistry Sample Paper 2021 Set A comes with detailed, teacher-verified solutions. We have provided step-by-step answers for Chemistry to help students of Class 12 understand correct methodology and marking scheme.

How can practicing CBSE Class 12 Chemistry Sample Paper 2021 Set A help in exam preparation?

Practicing this Chemistry paper helps in time management and identifying important topics. For Class 12, solving mock papers is the best way to gain confidence and reduce exam-day anxiety.

Is the CBSE Class 12 Chemistry Sample Paper 2021 Set A accessible on mobile and tablets?

Yes, all our study materials for Class 12 Chemistry are provided in a mobile-friendly PDF format. You can easily download CBSE Class 12 Chemistry Sample Paper 2021 Set A on your mobile device.