TNPSC Chemistry Online Test in Tamil and English - 1

Question: 1

Which one of the following is a major constituent of Biogas?

(A) Nitrogen dioxide

(B) Carbon dioxide

(C) Methane

(D) Hydrogen

Question: 2

Soda water contains

(A) Sulphuric acid

(B) Carbon dioxide

(C) carbonic acid

(D) Nitrous acid

Question: 3

Which among the following is a solid non metal?

(A) Iodine

(B) Mercury

(C) Water

(D) Chlorine

Question: 4

Which of the following metals was first discovered by man?

(A) Silver

(B) Gold

(C) Copper

(D) Bronze

Question: 5

Which one of the following is a mixture?

(A) Sugar

(B) Table salt

(C) Sea water

(D) Lime