set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

The most reactive among the Halogens is

a) Chlorine

b) Bromine

c) Fluorine

d) Iodine

Question : 2

Which gas is mixed with Oxygen for respiration by divers in deep sea?

a) Nitrogen

b) Xenon

c) Helium

d) Ammonia

Question : 3

Tear gas is

a) Chlorine

b) Hydrogen Carbide

c) Ammonia

d) Hydrogen Sulphide

Question : 4

Heavy water has molecular weight

a) 54

b) 36

c) 18

d) 20

Question : 5

In the case of rusting, the weight of iron

a) Uncertain

b) Remains the same

c) Increases

d) Decreases

Question : 6

Percentage of Silver in German Silver is

a) None of these

b) 0%

c) 1%

d) 5%