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Chemistry - General Science MCQs for Competitive Exams | Page-10

(91) Hydrogen gas is not found in atmosphere due to
[A] It is highly inflammable
[B] It is the lightest gas
[C] It is absorbed by plants
[D] It immediately combines with oxygen to form water

Comment

Answer: Option [B]
(92) By-product obtained by soap industry is
[A] Glycerol
[B] Naphthalene
[C] Caustic soda
[D] Caustic potash

Comment

Answer: Option [A]

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(93) The acid used in a lead storage battery is
[A] Nitric acid
[B] Phosphoric acid
[C] Sulphuric acid
[D] Hydrochloric acid

Comment

Answer: Option [C]
(94) Petroleum is a mixture of
[A] Salts
[B] Polymer
[C] Elements
[D] Hydrocarbon

Comment

Answer: Option [D]
(95) Smoke is formed due to
[A] Solid dispersed in gas
[B] Gas dispersed in gas
[C] Gas dispersed in solid
[D] Solid dispersed in liquid

Comment

Answer: Option [A]
(96) The chemical name of ‘common salt’ is
[A] calcium chloride
[B] ammonium chloride
[C] sodium nitrate
[D] sodium chloride

Comment

Answer: Option [D]
(97) Fertiliser having high Nitrogen content is:
[A] Urea
[B] Calcium citrate
[C] Ammonium nitrate
[D] Ammonium sulphate

Comment

Answer: Option [C]
(98) An atomic pile is used for
[A] producing X-ray
[B] conducting nuclear fission
[C] accelerating atoms
[D] conducting thermonuclear fusion

Comment

Answer: Option [B]
(99) Sea water can be purified by the process of
[A] Evaporation
[B] Filtration
[C] Distillation
[D] Fractional distillation

Comment

Answer: Option [C]
(100) The amount of chlorine available in water after disinfection is called as
[A] Free chlorine
[B] Residual chlorine
[C] Free available chlorine
[D] Combined available chlorine

Comment

Answer: Option [B]

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