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Chemical Reactions and Equations MCQ Questions with Answers

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 Science Chapterwise. In this article of AKVTutorials, you will get Chemical Reactions and Equations MCQ Questions with Answer Keys.

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 41:

PCl5(s) + XH2O → YH3PO4(aq) + ZHCL(aq)

The value of X Y, and Z are:

Option A : X -4, Y -3, Z -3

Option B : X -4, Y -1, Z -5

Option C : X -1, Y -2, Z -3 

Option D : X -5, Y -1, Z -2

Show/Hide Answer

Option B : X -4, Y -1, Z -5

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 42:

In which of the following chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature? 

Option A : 2H2(l) + O2(l) → 2H2O(g)

Option B : 2H2(g) + O2(l) → 2H2O(l)

Option C : 2H2(g) + O2(g) → 2H2O(l)

Option D : 2H2(g) + O2(g) → 2H2O(g)

Show/Hide Answer

Option C : 2H2(g) + O2(g) → 2H2O(l)

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 43:

The condition produced by aerial oxidation of fats and oils in foods marked by unpleasant smell and taste is called:

Option A : antioxidation

Option B : reduction

Option C : rancidity

Option D : corrosion

Show/Hide Answer

Option C : rancidity

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 44:

What happens when ferrous sulphate crystals are heated?

Option A : A gas having the smell of burning sulphur is evolved.

Option B : No gas is evolved.

Option C : Brown colored gas is evolved.

Option D : Colorless and odorless gas is evolved.

Show/Hide Answer

Option A : A gas having the smell of burning sulphur is evolved.

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 45:

Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is:

Option A : 1 : 1

Option B : 2:1

Option C : 4:1

Option D : 1:2

Show/Hide Answer

Option B : 2:1

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 46:

Which of the following is not a thermal decomposition reaction?

Option A : 2KClO3 → 2KCl + 3O2

Option B : ZnCO3 → ZnO + CO2

Option C : 2FeSO4 → Fe2O3 + SO2 + SO3 

Option D : 2H2O → 2H2 + O2

Show/Hide Answer

Option D : 2H2O → 2H2 + O2

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 47:

Name the products formed when iron filings are heated with dilute hydrochloric acid

Option A : Fe (III) chloride and water

Option B : Fe (II) chloride and water

Option C : Fe (II) chloride and hydrogen gas

Option D : Fe (III) chloride and hydrogen gas

Show/Hide Answer

Option D : Fe (III) chloride and hydrogen gas

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 48:

Y + 2HCl → ZnCl2 + H2 . In the above reaction, Y is:

Option A : Aluminium

Option B : Copper

Option C : Sodium

Option D : Zinc

Show/Hide Answer

Option D : Zinc

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 49:

Which of the following gases can be used for storage

Option A : Carbon dioxide or Oxygen

Option B : Nitrogen or Oxygen

Option C : Carbon dioxide or Helium

Option D : Helium or Nitrogen

Show/Hide Answer

Option D : Helium or Nitrogen

MCQ Questions for Class 10 Chemical Reactions and Equations Question No 50:

In the reaction Br2 + 2I → 2Br + I2 , the oxidizing agent is:

Option A : Br2

Option B : I

Option C : Br

Option D : I2

Show/Hide Answer

Option A : Br2

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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