TNPSC Chemistry Study Material in English Pdf - 1

Question: 1

Tetraethyl lead is used as

(A) Petrol additive

(B) Pain killer

(C) Fire extinguisher

(D) Mosquito repellent

Question: 2

Which allotrope of carbon is in rigid three dimensional structure to

(A) Graphite

(B) Diamond

(C) Carbon Black

(D) Fullerene

Question: 3

Which of the following chemically predominants in the silk fibres?

(A) Carbohydrate

(B) Complex lipid

(C) Mixture of polysaccharide and fat

(D) Protein

Question: 4

Sodium metal is kept under

(A) Alcohol

(B) Water

(C) Kerosene

(D) Petrol

Question: 5

Which of the following is the best conductor of electricity?

(A) Silver

(B) Mica

(C) Copper

(D) Zinc