Home: Chemistry MCQs
Q. Water gas is a mixture of
(A) Hydrogen and Oxygen
(B) Hydrogen and Carbon monoxide
(C) Water and Air
(D) Steam and Air
The answer is: (B) Hydrogen and Carbon monoxide ☑
Q. Chlorine act as a bleaching agent in the presence of
(A) HNO3
(B) NaOH
(C) HCL
(D) H2O
The answer is: (D) H2O ☑
Q. The chemical formula of magnetic oxide is
(A) Fe3O4
(B) Fe2O3.H2O
(C) Fe2O3
(D) FeO
The answer is: (A) Fe3O4 ☑
Q. Rain water is acidic in nature because air contains
(A) Oxygen
(B) Nitrogen
(C) Carbon dioxide
(D) All of these
The answer is: (C) Carbon dioxide ☑
Q. Nutrient pollution of water bodies is caused by
(A) pathogens
(B) acid rain
(C) calcium and magnesium
(D) nitrogen and phosphorus
The answer is: (D) nitrogen and phosphorus ☑