Category: Chemistry MCQs

Role of biotechnology in the production of food is based on:

(A) Decomposition
(B) Respiration
(C) Digestion
(D) Fermentation

Answer: (D) Fermentation

Q. A metabolic process that produces chemical changes in organic substrates through the actions of enzymes is known as:
(A) Fermentation
(B) Decomposition
(C) Digestion
(D) None of these

Answer: (A) Fermentation

Q. The process in which green plants and some other organisms transform light energy in to chemical energy is known as:
(A) Metabolism
(B) Photosynthesis
(C) Glycolysis
(D) None of these

Answer: (B) Photosynthesis

Laughing gas has chemical composition of following two elements:

(A) Nitrogen + Hydrogen
(B) Nitrogen + Carbon
(C) Nitrogen + Oxygen
(D) Oxygen + Carbon

Answer: (C) Nitrogen + Oxygen

Q. What is the chemical name of laughing gas?
(A) Carbon dioxide
(B) Nitrous oxide
(C) Nitric oxide
(D) None of these

Answer: (B) Nitrous oxide

Q. What is the chemical formula of laughing gas?
(A) N3O
(B) NO2
(C) N2O3
(D) N2O

Answer: (D) N2O

The name of the common mineral salt present in sweat is:

(A) Calcium Oxalate
(B) Potassium Sulphate
(C) Sodium Chloride
(D) Iron Sulphide

Answer: (C) Sodium Chloride

Q. What is the chemical formula of sugar?
(A) C12H22O11
(B) C6H12O6
(C) CH2OH
(D)None of these

Answer: (A) C12H22O11

Q. What is the chemical formula of glucose?
(A) C12H22O11
(B) C6H12O6
(C) CH2OH
(D) None of these

Answer: (B) C6H12O6