Chemistry MCQs with answers Page - 148

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following is used to bleach clothes?

  • (A) Oxygen
  • (B) Chlorine
  • (C) Carbon dioxide
  • (D) Sulphur dioxide

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which metal is most abundant in the Earth's crust?

  • (A) Iron
  • (B) Aluminium
  • (C) Copper
  • (D) Calcium

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which chemical is used to preserve biological specimens?

  • (A) Formalin
  • (B) Ethanol
  • (C) Glycerol
  • (D) Acetone

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following elements has the lowest atomic mass?

  • (A) Helium
  • (B) Hydrogen
  • (C) Lithium
  • (D) Beryllium

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Shyam Dubey • 3.70K Points
Extraordinary

Q. What is the process of coating iron with zinc called?

  • (A) Electroplating
  • (B) Galvanization
  • (C) Rusting
  • (D) Alloying

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following gases turns lime water milky?

  • (A) Oxygen
  • (B) Carbon dioxide
  • (C) Nitrogen
  • (D) Hydrogen

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which metal is used for making filaments in electric bulbs?

  • (A) Copper
  • (B) Tungsten
  • (C) Aluminium
  • (D) Iron

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which of the following is used as an antifreeze in automobile radiators?

  • (A) Methanol
  • (B) Ethylene glycol
  • (C) Acetone
  • (D) Glycerol

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which vitamin is synthesized by the human body when exposed to sunlight?

  • (A) Vitamin A
  • (B) Vitamin B12
  • (C) Vitamin C
  • (D) Vitamin D

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Shyam Dubey • 3.70K Points
Extraordinary

Q. Which chemical is used to remove hardness of water?

  • (A) Baking soda
  • (B) Washing soda
  • (C) Caustic soda
  • (D) Bleaching powder

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