set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Which has is filled at low pressure in a tube light?

a) Neon and Mercury vapour

b) Nitrogen and Neon

c) Argon and Neon

d) Only Argon

Question : 2

Which one of the following nonmetals is not a poor conductor of electricity?

a) Phosphorus

b) Sulphur

c) Selenium

d) Bromine

Question : 3

Which gas is used in the purification of drinking water?

a) Carbon Dioxide

b) Fluorine

c) Helium

d) Chlorine

Question : 4

The halogen being used as analgesic is

a) Bromine

b) Iodine

c) Chlorine

d) Fluorine

Question : 5

Discharge of Nitrogen causes

a) Increase in the amount of Nitrogen in lithosphere

b) The amount of Nitrogen in lithosphere and in atmosphere unchanged

c) Increase in the amount of atmospheric nitrogen

d) Destruction of nitrates bacteria

Question : 6

Which pair of following is of Copper alloys?

a) None of the above

b) Brass and Bronze

c) Brass and invar

d) Bronze and Nichrome