set 4 MCQ Questions & Answers Detailed Explanation

Question : 1

The process of extraction of metal from its ores, is known as

a) purification

b) concentration

c) calcination

d) metallurgy

Question : 2

What is anode mud –

a) impurities collected at anode in electrolysis during purification of metals

b) fan of anode

c) metal of anode

d) all of these

Question : 3

Pearl is mainly constituted of

a) Calcium Sulphate

b) Calcium Carbonate

c) Calcium Oxalate

d) Calcium Oxide

Question : 4

Which one of the following is the secondary source of light in a fluorescent lamp?

a) Argon gas

b) Mercury vapour

c) Neon gas

d) Fluorescent coating

Question : 5

Graphite is a/an –

a) metalloid

b) alloy

c) metal

d) non-metal

Question : 6

Match List-I with List-II:

a) 2 3 4 1

b) 3 2 4 1

c) 1 3 2 4

d) 4 3 1 2