Class 10 Science MCQ Chapter 1 Chemical Reaction and Equation

Class 10 Science MCQ Chapter 1 Chemical Reaction and Equation, Class 10 Science MCQ Question Answer, Class 10 Science Multiple Choice Question Answer to each chapter is provided in the list of SCERT Science Class 10 Objective Types Question Answer so that you can easily browse through different chapters and select needs one. Class 10 Science MCQ Chapter 1 Chemical Reaction and Equation Question Answer can be of great value to excel in the examination.

SCERT Class 10 Science MCQ Chapter 1 Chemical Reaction and Equation

SCERT Class 10 General Science MCQ Chapter 1 Chemical Reaction and Equation Notes covers all the exercise questions in SCERT Science Textbooks. The NCERT Class 10 Science MCQ Chapter 1 Chemical Reaction and Equation provided here ensures a smooth and easy understanding of all the concepts. Understand the concepts behind every chapter and score well in the board exams.

Chemical Reaction and Equation

Chapter – 1

Multiple Choice Questions & Answers

1. Electrolysis of water is an example of-

(a) Combination reaction.

(b) Decomposition reaction.

(c) Displacement reaction.

(d) Exothermic reaction.

Ans: (b) Decomposition reaction.

2. In which of the following reactions, there is an exchange of ions between the reactants-

(a) Displacement.

(b) Decomposition.

(c) Double displacement.

(d) Combination.

Ans: (c) Double displacement.

3. Burning of natural gas is an example of-

(a) Endothermic reaction.

(b) Exothermic reaction. 

(c) Combination reaction.

(d) Decomposition reaction.

Ans: (b) Exothermic reaction. 

4. ZnO + C→  Zn + CO – The substances that are oxidised and reduced in the following reaction are respectively-

(a) ZnO, C 

(b) Zn, CO

(c) ZnO, CO

(d) C, ZnO

Ans: (d) C, ZnO

5. MnO₂+ 4HCI → MnCl₂ + 2H₂O + Cl₂ — The substances that are oxidised and reduced in the following reaction are respectively-

(a) HCI, MnO₂

(b) HCI, MnCl₂

(c) MnO₂, HCI 

(d) MnO₂, Cl₂

Ans: (a) HCI, MnO₂

6. The white powder produced when a magnesium ribbon is burnt in air is-

(a) Magnesium Carbonate 

(b) Magnesium Nitrate.

(c) Magnesium Oxide.

(d) Magnesium hydroxide.

Ans: (c) Magnesium Oxide.

7. The reaction between quick lime and water is an example of –

(a) Combination reaction.

(b) Decomposition reaction.

(c) Exothermic reaction.

(d) (a) and (c).

Ans: (d) (a) and (c).

8. Thermal decomposition of ferrous sulphate gives-

(a) SO₂ 

(b) SO₃

(c) Fe₂ O₃

(d) All of above.

Ans: (d) All of above.

9. Production of quick lime by heating limestone is an example of-

(a) Combination reaction.

(b) Decomposition reaction.

(c) Displacement reaction.

(d) Exothermic reaction.

Ans: (b) Decomposition reaction.

10. Which one is not formed in the thermal decomposition of lead nitrate-

(a) PbO 

(b) NO₂ 

(c) N₂ 

(d) O₂ 

Ans: (c) N₂ 

11. Conversion of silver chloride to silver in the sunlight is an example of-

(a) Decomposition reaction.

(b) Combination reaction.

(c) Endothermic reaction.

(d) (a) and (c).

Ans: (d) (a) and (c).

12. Reaction between copper sulphate and Zinc is an example of-

(a) Displacement reaction.

(b) Precipitation reaction.

(c) Double displacement reaction.

(d) Combination reaction.

Ans: (a) Displacement reaction.

13. BaCl₂  + H₂ SO₄ → BaSO₄ + 2HCl –The above reaction is an example of-

(a) Displacement reaction.

(b) Double Displacement reaction.

(c) Precipitation reaction.

(d) (b) and (c).

Ans: (d) (b) and (c).

14. 2Cu+0₂  → 2CuO – The substances that are oxidised and reduced in the above reaction-

(a) CuO, O₂ 

(b) Cu, O₂ 

(c) O₂, CuO

(d) Cu, CuO

Ans: (b) Cu, O₂ 

15. The colour of coating formel an copper due to its corrosion is-

(a) Black.

(b) Brown.

(c) Green.

(d) Red.

Ans: (c) Green.