Practice MCQ Questions and answers on Chemistry-GK Page-1 section-4

Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Section 8 Section 9 Section 10 Section 11 Section 12

1.
Colour imparted to the Bunsen flame by strontium salt is

A. Bluish green

B. Apple-green

C. Brick red

D. Crimson red

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2.
An oxidising agent is a

A. An electron acceptor

B. An electron donor

C. In a chemical reaction its oxidation number increases

D. It releases H₂ in a chemical reaction

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3.
Silver gets corroded due to ________ in air.

A. Oxygen

B. Hydrogen Sulphide

C. Carbon dioxide

D. Nitrogen

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4.
Which of the following causes the rusting of iron?
a. Oxidation
b. Reduction
c. Chemical reaction with oxygen
d. Chemical reaction with CO²

A. A and B

B. B and C

C. C and D

D. A and C

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5.
Photo-oxidation process is initiated by

A. Light

B. Heat

C. Oxygen

D. Catalyst

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6.
Copper substances when exposed to air gains a green coating due to the formation of:

A. CuO

B. CuCO₃ Cu(OH)₂

C. CuSO₄

D. Cu(NO₃)₂

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7.
Browning of paper in old books is caused by

A. Frequent use

B. Lack of aeration

C. Collection of dust

D. Oxidation of cellulose

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8.
Catalyst is a substance which

A. Increases the rate of the reaction

B. Decreases the rate of reaction

C. Has no action on the rate of the reaction

D. None of these

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9.
When quick lime is added to water

A. Heat is liberated

B. Heat is absorbed

C. Temperature decreases

D. No heat change takes place

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10.
What is the element that is in the highest percentage in the composition of the earth ?

A. Silicon

B. Oxygen

C. Magnesium

D. Iron

Answer & Solution Discuss in Board Save for Later

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Practice MCQ Questions and answers on Chemistry-GK

1. Colour imparted to the Bunsen flame by strontium salt is

Answer & Solution

2. An oxidising agent is a

Answer & Solution

3. Silver gets corroded due to ________ in air.

Answer & Solution

4. Which of the following causes the rusting of iron? a. Oxidation b. Reduction c. Chemical reaction with oxygend. Chemical reaction with CO2

Answer & Solution

5. Photo-oxidation process is initiated by

Answer & Solution

6. Copper substances when exposed to air gains a green coating due to the formation of:

Answer & Solution

7. Browning of paper in old books is caused by

Answer & Solution

8. Catalyst is a substance which

Answer & Solution

9. When quick lime is added to water

Answer & Solution

10. What is the element that is in the highest percentage in the composition of the earth ?

Answer & Solution

Read More Section(Chemistry)

1.
Colour imparted to the Bunsen flame by strontium salt is

2.
An oxidising agent is a

3.
Silver gets corroded due to ________ in air.

4.
Which of the following causes the rusting of iron?
a. Oxidation
b. Reduction
c. Chemical reaction with oxygen
d. Chemical reaction with CO²

5.
Photo-oxidation process is initiated by

6.
Copper substances when exposed to air gains a green coating due to the formation of:

7.
Browning of paper in old books is caused by

8.
Catalyst is a substance which

9.
When quick lime is added to water

10.
What is the element that is in the highest percentage in the composition of the earth ?