CBSE Sample Papers for Class 12 Chemistry

• Question Paper 2020
• Marking Scheme 2020
• Question Paper 2019
• Marking Scheme 2019
• Question Paper 2018
• Marking Scheme 2018
• Question Paper 2017
• Marking Scheme 2017
• Question Paper 2016

CBSE sample papers and board papers – All India, Foreign and Delhi set 1, set 2 and set 3 main and compartment exams papers to download. Ask Questions in discussion forum to solve your doubts. Download NCERT Books 2024-25 and offline apps based on latest CBSE Syllabus.

CBSE Board Exam Papers – 2018 Compartment Exams

• CBSE Board Paper Set – 1
• Set – 1 Solutions & Marking Scheme
• CBSE Board Paper Set – 2
• Set – 2 Solutions & Marking Scheme
• CBSE Board Paper Set – 3
• Set – 3 Solutions & Marking Scheme

CBSE Board Exam Papers – 2018 Main Exams

• CBSE Board Paper Set – 1
• Set – 1 Solutions & Marking Scheme
• CBSE Board Paper Set – 2
• Set – 2 Solutions & Marking Scheme
• CBSE Board Paper Set – 3
• Set – 3 Solutions & Marking Scheme

CBSE Board Exam Papers – 2017 Compartment Exams

• Delhi Set 1 Set 2 Set 3 Answers & Marking Scheme
  
• Outside Set 1 Set 2 Set 3 Answers & Marking Scheme

CBSE Board Exam Papers – 2017 Main Exams

• Delhi Set 1 Set 2 Set 3 Answers & Marking Scheme
  
• Outside Set 1 Set 2 Set 3 Answers & Marking Scheme
  
• Foreign Set 1 Set 2 Set 3 Answers & Marking Scheme

CBSE Board Exam Papers – 2016 Main Exams

• Delhi Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3
• Foreign Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3

CBSE Board Exam Papers – 2015 Compartment Exams

• Delhi Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3
• Outside Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3

CBSE Board Exam Papers – 2015 Main Exams

• Delhi Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3
• Foreign Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3
• Ajmer Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3
• Allahabad Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3
• Bhubaneswer Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3
• Chennai Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3
• Guwahati Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3
• Panchkula Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3
• Patna Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3

CBSE Board Exam Papers – 2014 Compartment Exams

• Delhi Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3
• Outside Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3

CBSE Board Exam Papers – 2014 Main Exams

• Delhi Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3
• Outside Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3
• Foreign Set 1 Answer Set 1 Set 2 Answer Set 2 Set 3 Answer Set 3

1. Give reasons for the following :
(a) Measurement of osmotic pressure method is preferred for the determination of molar masses of macromolecules such as proteins and polymers.
(b) Aquatic animals are more comfortable in cold water than in warm water.
(c) Elevation of boiling point of 1 M KCl solution is nearly double than that of 1 M sugar solution.
2. What happens when
(a) a freshly prepared precipitate of Fe(OH)3 is shaken with a small amount of FeCl3 solution ?
(b) persistent dialysis of a colloidal solution is carried out ?
(c) an emulsion is centrifuged ?
3. (a) Why is bithional added to soap ?
(b) What is tincture of iodine ? Write its one use.
(c) Among the following, which one acts as a food preservative ?
Aspartame, Aspirin, Sodium Benzoate, Paracetamol

1. Write one similarity between Physisorption and Chemisorption.
2. Define the following terms: (i) Colligative properties (ii) Molality (m)
3. Write the equations involved in the following reactions: (i) Wolff-Kishner reduction (ii) Etard reaction.

4. A 10% solution (by mass) of sucrose in water has freezing point of 269.15 K. Calculate the freezing point of 10% glucose in water, if freezing point of pure water is 273.15 K. Given: (Molar mass of sucrose = 342 g/mol) (Molar mass of glucose = 180 g/mol)
5. Write one difference in each of the following: (i) Lyophobic sol and Lyophilic sol (ii) Solution and Colloid (iii) Homogeneous catalysis and Heterogeneous catalysis.

1. Following compounds are given to you: 2-Bromopentane, 2-Bromo-2-methylbutane, 1-Bromopentane (i) Write the compound which is most reactive towards SN 2 reaction. (ii) Write the compound which is optically active. (iii) Write the compound which is most reactive towards β-elimination reaction.
2. Do the following conversions in not more than two steps: (i) Benzoic acid to benzaldehyde (ii) Ethyl benzene to Benzoic acid (iii) Prapanone to Propene.
3. Write the structures of the monomers used for getting the following polymers: (i) Dacron (ii) Melamine – formaldehyde polymer (iii) Buna-N
4. Define the following: (i) Anionic detergents (ii) Broad spectrum antibiotics (iii) Antiseptic