Chemistry MCQs with answers Page - 30

Here, you will find a collection of MCQ questions on Chemistry. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Which one of the following is not coal variety?

  • (A) Lignite
  • (B) Bituminous
  • (C) Dolomite
  • (D) Peat

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Q. Which of the following is used to increase the anti-knocking property of petrol ?

  • (A) Tetramethyl lead
  • (B) Tetraethyl lead
  • (C) Trimethyl lead
  • (D) Triethyl lead

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Q. The quality of petrol is expressed in terms of

  • (A) Cetane number
  • (B) Gold number
  • (C) Octane number
  • (D) Added unlead compounds

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Q. Which of the following type of coal has the lowest proportion of volatile matter ?

  • (A) Lignite
  • (B) Peat
  • (C) Bituminous
  • (D) Anthracite

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Q. The element of an electric stove made

  • (A) Magnalium
  • (B) Invar
  • (C) Nicrome
  • (D) Copper

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Q. The isotope of uranium capable of sustaining chain reaction is

  • (A) U-238
  • (B) U-245
  • (C) U-239
  • (D) U-235

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Q. Permanent hardness of water can be removed by adding

  • (A) Potassium permanganate
  • (B) Chlorine
  • (C) Washing soda
  • (D) Bleaching powder

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Q. Production of chlorofluorocarbons (CFC) gas which is proposed to be banned in India, is used in which of the following domestic products?

  • (A) Television
  • (B) Tube light
  • (C) Cooking gas
  • (D) Refrigerator

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Q. The metallurgical process in which a metal is obtained in a fused state is called

  • (A) Calcinations
  • (B) Smelting
  • (C) Froth floatation
  • (D) Roasting

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Q. The air we inhale is mixture of gases. Which of the following gases in the mixture is highest in percentage?

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

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