Top 1000+ Solved Chemistry MCQ Questions Answer
Q. Which one among the following is-used as a moderator in nuclear reactors?
a. Ozone
b. Heavy hydrogen
c. Heavy water
d. Hydrogen peroxide
Q. The chemical name of baking soda is -
a. Sodium carbonate
b. Sodium bicarbonate
c. Sodium chloride
d. Sodium nitrate
Q. Chemical name of common salt is –
a. Sodium Chloride
b. Sodium Bicarbonate
c. Sodium
d. Sodium Oxide
Q. Nitrogen in water is commonly found in the form of -
a. Nitrous oxide
b. Nitrate
c. Nitric oxide
d. Nitrite
Q. The acid which fails to liberate carbon dioxide from sodium bicarbonate is :
a. Acetic acid
b. Formic acid
c. Carbonic acid
d. Sulphuric acid
Q. Which of the following is the strongest base in aqueous solution?
a. Diethylamine
b. Triethylamine
c. Ammonia
d. Ethylamine
Q. The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is -
a. Xenon
b. Krypton
c. Argon
d. Helium
Q. Which of the following substance’s smell is similar to Ethanoic acid?
a. Tomatojuice
b. Kerosene
c. Vinegar
d. Lemon
Q. A powerful eye irritant present in smog is –
a. nitric oxide
b. sulphur dioxide
c. peroxyacetyl nitrate
d. carbon dioxide
Q. The gas used to dilute oxygen for breathing by deep sea divers is-
a. Neon
b. Argon
c. Nitrogen
d. Helium
Q. The chemical substance present in bones and teeth is -
a. Calcium phosphate
b. Calcium chloride
c. Calcium sulphate
d. Calcium borate
Q. Maximum permissible concentration of copper in drinking water in mg/L is -
a. 0.01
b. 0.05
c. 1.0
d. 2.0