TRB Model Question Papers with Answer in Chemistry - 2

Question: 6

Which of the following is used in softening of hard water?

(A) Bleaching powder

(B) Baking soda

(C) Washing soda

(D) Plaster of Paris

Question: 7

Which type of glass is used in telecommunications?

(A) Pyrex glass

(B) Flint glass

(C) Optical fibres

(D) Soda glass

Question: 8

Vinegar is an aqueous solution of

(A) Acetic acid

(B) Citric acid

(C) Oxalic acid

(D) Hydrochloric acid

Question: 9

Stainless steel is an alloy of

(A) Iron, carbon and nickel

(B) Iron and manganese

(C) Iron, chromium and nickel

(D) Iron, chromium and zinc

Question: 10

The nuclear fuel in the sun is

(A) Alpha particles

(B) Uranium

(C) Hydrogen

(D) Helium