Top 1000+ Solved Chemistry MCQ Questions Answer
Q. Among the following, which is always found in free-state in nature?
a. Gold
b. Silver
c. Sodium
d. Copper
Q. In a nuclear reactor the material use for absorbing neutrons is –
a. zinc
b. radium
c. lead
d. cadmium
Q. Solder metal is an alloy of –
a. lead and tin
b. lead and antimony
c. copper and zinc
d. copper and tin
Q. Ozone depletion in the atmosphere is mainly caused by -
a. sulphur dioxide
b. nitrogen dioxide
c. hydrogen sulphide
d. chlorofluorocarbon
Q. Which halide is used in making sensitive emulsion on photographic film?
a. Sodium chloride
b. Silver bromide
c. Silver iodide
d. Silver chloride
Q. The depletion of ozone layer is due to -
a. chloro fluoro carbon
b. carbon dioxide
c. sulphur dioxide
d. ethane
Q. Sodium bicarbonate is commercially known as –
a. Washing soda
b. Baking soda
c. Caustic soda
d. Soda lime
Q. Coal is formed from –
a. crude oil
b. deposit of animal waste
c. coke
d. compressed and hardened biomass
Q. ‘Freon' used as refrigerants is chemically known as -
a. chlorinated hydrocarbon
b. fluorinated hydrocarbon
c. chlorofluoro hydrocarbon
d. fluorinated aromatic compound