CBSE 2024 Science Question Paper for Class 10

About this paper

This is the CBSE Class 10 Science board paper from 2024, Q.P. code 31/3/3 (Series DAA1B/3, Set 3), printed in Hindi and English. It carries 80 marks over three hours, plus 15 minutes to read, and has 39 compulsory questions in five sections. Section A is 20 multiple-choice questions. Sections B, C and D are very short, short and long answers of 2, 3 and 5 marks. Section E has three case-based questions of 4 marks each. There is no overall choice, though some questions have an internal option. This copy has questions only.

Exam

CBSE Class 10

Subject

Science

Year

2024

Paper code

31/3/3

Maximum marks

80

Time allowed

3 hours

Questions

39

Pages

32

Answers included

No, questions only

Paper pattern

• Section A

  20 marks

  Questions 1–20, multiple-choice, 1 mark each

• Section B

  12 marks

  Questions 21–26, very short answers of 30 to 50 words, 2 marks each

• Section C

  21 marks

  Questions 27–33, short answers of 50 to 80 words, 3 marks each

• Section D

  15 marks

  Questions 34–36, long answers of 80 to 120 words, 5 marks each

• Section E

  12 marks

  Questions 37–39, source-based or case-based units with sub-parts, 4 marks each

Topics covered

• Chemical reactions and equations
• Acids, bases and salts
• Carbon and its compounds

Questions from this paper

1. Which reaction is different from the other three: NaCl with AgNO₃, CaO with water, KNO₃ with H₂SO₄, or ZnCl₂ with H₂S?
2. CaCO₃ gives a product X and CO₂. X is quick lime, gypsum, limestone or plaster of Paris.
3. A pair of natural indicators is litmus and methyl orange, turmeric and litmus, phenolphthalein and methyl orange, or methyl orange and turmeric.
4. A compound used in the glass, soap and paper industries is washing soda, baking soda, bleaching powder or common salt.