TRB Chemistry Question Bank - 1

Question: 1

Which inorganic precipitate acts as semipermeable membrane?

(A) Copper ferrocyonide

(B) Nickel phosphate

(C) Barium oxalate

(D) Calcium sulphate

Ans: A

Copper ferrocyonide

Question: 2

Epoxy resins are used as

(A) Moth repellants

(B) Detergents

(C) Adhesives

(D) Insecticides

Ans: C

Adhesives

Question: 3

Which of the following is not a compound?

(A) Slaked lime

(B) Black lead

(C) Silica

(D) Red lead

Ans: B

Black lead

Question: 4

Oxides of metals are generally

(A) Acidic

(B) Neutral

(C) Amphoteric

(D) Basic

Ans: D

Basic

Question: 5

Pyrethrin used in mosquito coil is obtain from

(A) a fungus

(B) a bacterium

(C) an insect

(D) a seed plant

Ans: D

a seed plant

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