CBSE 2017 Chemistry Question Paper for Class 12

About this paper

This is the CBSE Class 12 Chemistry (Theory) question paper code 56/3, Series GBM, Set 3, from the 2017 board examination, printed in both Hindi and English. It carries 70 marks over three hours and has 26 compulsory questions: five one-mark, five two-mark, twelve three-mark, one four-mark value-based question and three five-mark long answers. The value-based question is about a student who campaigns against potassium bromate and iodate in bakery products. Internal choices are given in one two-mark question, one three-mark question and the long answers on carbonyl compounds, the d-block and solutions. Log tables may be used, but calculators are not allowed. This copy has the questions only, without answers, and its last page is missing.

Exam

CBSE Class 12

Subject

Chemistry

Year

2017

Paper code

56/3

Maximum marks

70

Time allowed

3 hours + 15 min reading

Questions

26

Pages

14

Answers included

No, questions only

Paper pattern

• Questions 1–5

  5 marks

  Very short answer questions, one mark each

• Questions 6–10

  10 marks

  Short answer questions, two marks each; internal choice in one

• Questions 11–22

  36 marks

  Short answer questions, three marks each; internal choice in one

• Question 23

  4 marks

  Value-based question

• Questions 24–26

  15 marks

  Long answer questions, five marks each, each with an internal choice

Topics covered

• Solid state
• Solutions and colligative properties
• Electrochemistry
• Chemical kinetics
• Surface chemistry and colloids
• Isolation of elements
• p-Block elements
• d- and f-Block elements
• Coordination compounds
• Haloalkanes and alcohols
• Aldehydes, ketones, carboxylic acids and amines
• Biomolecules, polymers and chemistry in everyday life

Questions from this paper

1. What type of colloid is formed when a gas is dispersed in a liquid? Give an example.
2. Write the name of the cell which is generally used in transistors. Write the reactions taking place at the anode and the cathode of this cell.
3. Why do ferrimagnetic substances show better magnetism than antiferromagnetic substances?
4. Why does copper obtained in the extraction from copper pyrites have a blistered appearance?
5. Define the following: cationic detergents, broad spectrum antibiotics and tranquilizers.
6. Write one similarity and one difference between the chemistry of lanthanoid and actinoid elements.