Top 500+ TNPSC General Science Chemistry Questions & Answers - 3

Question: 11

A bee-sting leaves an acid which causes pain and irritation. The injected acid is

(A) Citric acid

(B) Methanoic acid

(C) Sulphuric acid

(D) Acetic acid

Question: 12

Among alkali metals, the most reactive metal is

(A) Francium

(B) Lithium

(C) Sodium

(D) Caesium

Question: 13

Glass is actually

(A) A nitrified liquid

(B) An elastic solid

(C) An ionic solid

(D) A crystalline solid

Question: 14

If a proton of mass m is moving with velocity of light, its mass will be

(A) Zero

(B) Infinite

(C) Large but finite

(D) Unchanged

Question: 15

On rusting in the iron

(A) Its wt. is decreased

(B) Its wt. is increased

(C) No changes take place

(D) Its wt. changes