GK Quiz on Science: Chemistry Set X

GK Quiz on Science: Chemistry Set X, in this set you will find repository of 10 Multiple Choice Questions that will help you to attune and equipped for different competitive examinations as well as academic examinations.

1. The oxidation state of manganese (Mn) in KMnO₄ is:

A. +2

B. -2

C. +7

D. -7

Ans: C

2. The element whose oxidation state in its every compound is same:

A. Carbon

B. Fluorine

C. Hydrogen

D. Oxygen

Ans: B

3. The oxidation state of oxygen in OF₂ is:

A. +2

B. -2

C. +1

D. -1

Ans: A

4. The acid is a substance which:

A. Accepts (gains) electron

B. Donates electrons

C. Provides (donates) proton

D. Donates OH- ion

Ans: C

5. The alkali is a substance which:

A. Provides (donates) proton

B. Accepts proton

C. Donates electron

D. Accepts electron pair

Ans: B

6. The substance which makes the blue litmus paper red is :

A. Acid

B. Base

C. Alkali

D. Salt

Ans: A

7. The substance which makes the red litmus paper blue is:

A. Acid

B. Alkali

C. Salt

D. None of these

Ans: B

8. The first time pH value measurement is done by:

A. Leviatiae

B. Pristley

C. Cauvendish

D. Sorensan

Ans: D

9. The average pH value of the human blood is:

A. 5.4

B. 6.2

C. 7.4

D. 8.7

Ans: C

10. The average pH value of the milk is:

A. 6.1

B. 6.6

C. 7.4

D. 8

Ans:  B