set 4 MCQ Questions & Answers Detailed Explanation

Question : 1

Mercury is basically used in thermometer devices because its especiality is

a) High liquidity

b) High circulation power

c) High density

d) High specific heat

Question : 2

Aluminium is used in thermite welding because -

a) aluminium is a strong oxidising agent

b) aluminium is a light metal

c) aluminium has more affinity for oxygen

d) aluminium is a reactive metal

Question : 3

Statement I:
Soaps do not form lather with water containing salts of calcium and magnesium.
Statement II:
Calcium and magnesium salts of long chain fatty acids are insoluble in water.

a) Both the statements are individually true but Statement II is not the correct explanation of Statement I.

b) Statement I is true, but Statement II is false.

c) Both the statements are individually true and Statement II is the correct explanation of Statement I.

d) Statement I is false, but Statement II is true.

Question : 4

Horn silver is

a) a carbonate ore of silver

b) an oxide ore of silver

c) a sulphite ore of silver

d) a chloride ore of silver

Question : 5

Monazite is an ore of

a) Thorium

b) Titanium

c) Zirconium

d) Iron

Question : 6

Sodium is obtained by the electrolysis of

a) fused sodium chloride

b) an aqueous solution of sodium chloride

c) an aqueous solution of sodium hydroxide

d) fused sodium sulphate