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
Ans: A
Petrol additive
Question: 2
Which allotrope of carbon is in rigid three dimensional structure to
(A) Graphite
(B) Diamond
(C) Carbon Black
(D) Fullerene
Ans: B
Diamond
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
Ans: A
Carbohydrate
Question: 4
Sodium metal is kept under
(A) Alcohol
(B) Water
(C) Kerosene
(D) Petrol
Ans: C
Kerosene
Question: 5
Which of the following is the best conductor of electricity?
(A) Silver
(B) Mica
(C) Copper
(D) Zinc
Ans: A
Silver
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