Chemistry 9 Chapter 7 MCQs Test 3

In Chemistry 9 Chapter 7 MCQs Test 3, there are 12 MCQs. We have prepared 46 multiple-choice questions, which are divided into 4 practice Tests and 4 Test yourself MCQs Tests. All MCQs are prepared from FBISE Book and Past Papers.

Practice
MCQs Test No 3

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17

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Class 9 Chemistry
Chapter 7
Practice
MCQs Test No 3

1 / 12

What is oxidation number of P in K₃PO₄ ?

+4

+5

+2

+3

2 / 12

In hydrogen peroxide, oxygen has an oxidation state of _____.

-1

-2

+1

+2

3 / 12

An element whose oxidation number is decreased is said to have _____.

hydrogenated

reduced

oxidized

sublimed

4 / 12

Zn + CuO → ZnO + Cu
Which of the following acts as a reducing agent in this reaction?

ZnO

Zn

CuO

Cu

5 / 12

Fe⁺² → Fe⁺³ + e^-

In this reaction, iron gets _____.

reduced

decomposed

oxidized

displaced

6 / 12

In the reaction
2Ca(s) + O₂(g) → 2CaO(s)
,calcium is __________

synthesized

Reduced

none of the above

oxidized

7 / 12

The oxidation state of Na atom is _____.

+3

0

+2

+1

8 / 12

Fe₂O₃ + CO → Fe + CO₂
In the above equation, oxygen gets _____.

oxidized

decomposed

reduced

neither oxidized nor reduced

9 / 12

Identify the correct statement.

A reducing agent gains electrons, and itself gets reduced, in a chemical reaction.

An oxidizing agent gains electrons, and itself gets oxidized, in a chemical reaction

An oxidizing agent gains electrons, and itself gets reduced, in a chemical reaction.

An oxidizing agent loses electrons, and itself gets reduced, in a chemical reaction.

10 / 12

Cl₂ + 2e^- → 2Cl^-
The chlorine gets _____ in this reaction.

decomposed

oxidized

displaced

reduced

11 / 12

What is the oxidizing agent of this reaction?
3Mg + N₂ → Mg₃N₂

Mg

Mg₃N₂

N₂

none of the above

12 / 12

Gain of oxygen atoms by an element is called _____.

oxidation

reduction

decomposition

hydrogenation

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We have also made a test yourself MCQs Test No 3 for you so that you can prepare yourself well.

Test Yourself
MCQs Test No 3

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4

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Class 9 Chemistry
Chapter 7
Test Yourself
MCQs Test No 3

1 / 12

Fe⁺² → Fe⁺³ + e^-

In this reaction, iron gets _____.

displaced

oxidized

decomposed

reduced

2 / 12

Identify the correct statement.

An oxidizing agent gains electrons, and itself gets reduced, in a chemical reaction.

An oxidizing agent gains electrons, and itself gets oxidized, in a chemical reaction

An oxidizing agent loses electrons, and itself gets reduced, in a chemical reaction.

A reducing agent gains electrons, and itself gets reduced, in a chemical reaction.

3 / 12

In the reaction
2Ca(s) + O₂(g) → 2CaO(s)
,calcium is __________

synthesized

Reduced

none of the above

oxidized

4 / 12

What is the oxidizing agent of this reaction?
3Mg + N₂ → Mg₃N₂

Mg₃N₂

N₂

Mg

none of the above

5 / 12

The oxidation state of Na atom is _____.

+2

+1

0

+3

6 / 12

Cl₂ + 2e^- → 2Cl^-
The chlorine gets _____ in this reaction.

decomposed

displaced

oxidized

reduced

7 / 12

Fe₂O₃ + CO → Fe + CO₂
In the above equation, oxygen gets _____.

oxidized

decomposed

neither oxidized nor reduced

reduced

8 / 12

Gain of oxygen atoms by an element is called _____.

reduction

oxidation

hydrogenation

decomposition

9 / 12

An element whose oxidation number is decreased is said to have _____.

reduced

hydrogenated

oxidized

sublimed

10 / 12

Zn + CuO → ZnO + Cu
Which of the following acts as a reducing agent in this reaction?

ZnO

Cu

Zn

CuO

11 / 12

In hydrogen peroxide, oxygen has an oxidation state of _____.

-2

+1

+2

-1

12 / 12

What is oxidation number of P in K₃PO₄ ?

+2

+3

+4

+5

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