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Chemical Reactions and Equations Class 10 Science MCQ with Answer Keys Solutions PDF Download

If you are preparing for CBSE Class 10 Board Exam Term 1 which will be an objective type questions paper, then you need to practice multiple choice questions of Class 10 Chemistry Chapterwise. In this article of AKVTutorials, you will get Chemical Reactions and Equations Class 10 Science MCQ with Answer Keys.

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 11: 

Identify the substances that is oxidized and the substances that is reduced in the following reactions:

CuO (s) + H2 (g) ⟶ Cu(s) + H2O (l)

Option A : H2, CuO

Option B : H2, H O

Option C : H2, Cu

Option D : Cu, H2

Show/Hide Answer

Option A : H2, CuO

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 12: 

A dilute ferrous sulphate solution was gradually added to the beaker containing acidified permanganate solution. The light purple color of the solution fades and finally disappears. Which of the following is the correct explanation for the observation?

Option A : KMnO4 is an oxidizing agent, it oxidizes FeSO4

Option B : FeSO4 acts as an oxidizing agent and oxidizes KMnO4

Option C : The color disappears due to dilution; no reaction is involved

Option D : KMnO4 is an unstable compound and decomposes in presence of FeSO4 to a colorless compound.

Show/Hide Answer

Option A : KMnO4 is an oxidizing agent, it oxidizes FeSO4

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 13: 

The process of reduction involves

Option A : addition of oxygen

Option B : addition of hydrogen

Option C : removal of oxygen

Option D : removal of hydrogen

Show/Hide Answer

Option B : addition of hydrogen

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 14: 

Translate the following statement into the chemical equation and choose the correct option

“Hydrogen gas combines with nitrogen to form ammonia.”

Option A : 3H(g)+ N2(g) ⟶ 2NH3(g)

Option B : H2(g) + N2(g) ⟶ NH2(g)

Option C : 2H(g) + N2(g)⟶ 2NH3

Option D : None of these

Show/Hide Answer

Option A : 3H(g)+ N2(g) ⟶ 2NH3(g)

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 15: 

Which among the following is(are) double displacement reaction(s)?

(i)  Pb + CuCl2 → PbCl2+ Cu
(ii) Na2SO4+ BaCl2 → BaSO4+ 2NaCl
(iii) C + O2 → CO2
(iv) CH4+ 2O2 → CO2+ 2H2O

Option A : (i) and (iv)

Option B : (ii) only

Option C : (i) and (ii)

Option D : (iii) and (iv)

Show/Hide Answer

Option B : (ii) only

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 16: 

Give the ratio in which hydrogen and oxygen are present in water by volume.

Option A : 1:2

Option B : 1:1

Option C : 2:1

Option D : 1:8

Show/Hide Answer

Option A : 1:2

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 17: 

Which one of the following is the example of precipitation reaction?

Option A : Cu(s) + 2AgNO3(aq) ⟶ Cu(NO3)2(aq) + 2Ag(s)

Option B : CuCO3(s) + 𝚫 ⟶ CuO(s) + CO2(g)

Option C : N2(g) +3H2(g)⟶ 2NH3(g)

Option D : AgNO3(aq) + NaCl(aq) ⟶ AgCl(s) + NaNO3(aq)

Show/Hide Answer

Option D : AgNO3(aq) + NaCl(aq) ⟶ AgCl(s) + NaNO3(aq)

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 18: 

Which among the following statement(s) is(are) true? Exposure of silver chloride to sunlight for a long duration turns grey due to

(i) the formation of silver by decomposition of silver chloride
(ii) sublimation of silver chloride
(iii) decomposition of chlorine gas from silver chloride
(iv) oxidation of silver chloride

Option A : (i) only

Option B : (i) and (iii)

Option C : (ii) and (iii)

Option D : (iv) only

Show/Hide Answer

Option A : (i) only

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 19: 

MnO2 + 4HCl → 2 + 2H2O + Cl2

Identify the substance oxidized in the above equation.

Option A : MnCl2

Option B : HCl

Option C : H2O

Option D : MnO2

Show/Hide Answer

Option D : MnO2

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 20: 

A shiny brown colored element X on heating in air becomes black in color. Here X is:

Option A : Copper

Option B : Silver

Option C : Aluminum

Option D : Mercury

Show/Hide Answer

Option A : Copper

CBSE Class 10 Science Chapterwise MCQ
1 : Chemical Reactions & Equations MCQs
| 1 to 10 | 11 to 20
2 : Acids, Bases & Salts MCQs
| 1 to 10 | 11 to 20
3 : Metals & Non-Metals MCQs
| 1 to 10 | 11 to 20
4 : Carbon & Its Compound MCQs
| 1 to 10 | 11 to 20
5 : Periodic Classification of Elements MCQs
| 1 to 10 | 11 to 20
6 : Life Process MCQs
| 1 to 10 | 11 to 20
7 : Control & Coordination MCQs
| 1 to 10 | 11 to 20
8 : How Do Organism Reproduce MCQs
| 1 to 10 | 11 to 20
9 : Heredity & Evolution MCQs
| 1 to 10 | 11 to 20
10 : Light Reflection & Refraction MCQs
| 1 to 10 | 11 to 20
11 : Human Eye & Colorful World MCQs
| 1 to 10 | 11 to 20
12 : Electricity MCQs
| 1 to 10 | 11 to 20
13 : Magnetic Effect of Electric Current MCQs
| 1 to 10 | 11 to 20
14 : Source of Energy MCQs
| 1 to 10 | 11 to 20
15 : Our Environment MCQs
| 1 to 10 | 11 to 20
16 : Management of Natural Resources MCQs
| 1 to 10 | 11 to 20

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