Latest Chemistry General Knowledge(GK) Questions and answers

Chemistry - General Knowledge Questions

1 .

The nuclear particles which are assumed to hold the nucleons together are

A)

electrons

B)

positrons

C)

neutrons

D)

mesons

Correct Answer : mesons

2 .

The heat required to raise the temperature of body by 1 K is called

A)

specific heat

B)

thermal capacity

C)

water equivalent

D)

None of the above

Correct Answer : thermal capacity

3 .

The most important ore of aluminium is

A)

bauxite

B)

magnetite

C)

haematite

D)

monazite

Correct Answer : bauxite

4 .

The nucleus of a hydrogen atom consists of

A)

1 proton only

B)

1 proton + 2 neutron

C)

1 neutron only

D)

1 electron only

Correct Answer : 1 proton only

5 .

The mass number of an atom is equal to

A)

the number of protons

B)

the number of protons and electrons

C)

the number of nucleons

D)

the number of neutrons

Correct Answer : the number of nucleons

6 .

The most commonly used bleaching agent is

A)

chlorine

B)

alcohol

C)

carbon dioxide

D)

sodium chlorine

Correct Answer : chlorine

7 .

Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be

A)

2 : 16 : 2

B)

2 : 16 : 1

C)

1 : 16 : 2

D)

1 : 1 : 1

Correct Answer : 1 : 16 : 2

8 .

The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is

A)

helium

B)

ozone

C)

oxygen

D)

methane

Correct Answer : ozone

9 .

The National Chemical Laboratory is situated in

A)

New Delhi

B)

Bangalore

C)

Patna

D)

Pune

Correct Answer : Pune

10 .

The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in

A)

1.8 gram of H₂O

B)

12 moles of KMnO₄

C)

0.6N H₂SO₄

D)

4.6 gram of C₂H₅OH

Correct Answer :

1
2
3
4
5
6
7
8
9