set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Heavy water has molecular weight

a) 54

b) 36

c) 18

d) 20

Question : 2

Galvanized iron is coated with

a) Zinc

b) Silver

c) Aluminium

d) Galena

Question : 3

The most reactive among the Halogens is

a) Chlorine

b) Bromine

c) Fluorine

d) Iodine

Question : 4

Percentage of Silver in German Silver is

a) None of these

b) 0%

c) 1%

d) 5%

Question : 5

Third allotrope of Carbon was discovered by three scientists, who were awarded the Nobel Prize for Chemistry. Find out who was not on that team.

a) Faimen

b) H.W. Kroto

c) R.F. Curl

d) R.E. Smalley

Question : 6

Which gas is used in the purification of drinking water?

a) Carbon Dioxide

b) Fluorine

c) Helium

d) Chlorine