Chemistry MCQs with answers Page - 43

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. A powerful eye irritant present in smog is

  • (A) Nitric oxide
  • (B) Sulphur dioxide
  • (C) Peroxyacetyl nitrate
  • (D) Carbon dioxide

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Q. Which of the following is not a natural source of air pollution ?

  • (A) Volcanic eruptions and lightening discharge
  • (B) Biological decay of vegetable matter
  • (C) Photochemical oxidation of organic number
  • (D) None of the above

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Q. CNG used in automobiles to check pollution, mainly consists of

  • (A) CH4
  • (B) CO2
  • (C) N2
  • (D) H2

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Q. What are the major pollutants of cigarette smoke?

  • (A) Carbon monoxide and dioxin
  • (B) Carbon monoxide and nicotine
  • (C) Carbon monoxide and benzene
  • (D) Dioxin and benzene

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Q. Which of the following metals is not a pollutant ?

  • (A) Mercury
  • (B) Arsenic
  • (C) Lead
  • (D) Aluminium

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Q. Sodium metal is kept under

  • (A) Alcohol
  • (B) Kerosene
  • (C) Petrol
  • (D) Water

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Q. The metal that is used as a catalyst in the hydrogenation of oils is

  • (A) Pb
  • (B) Cu
  • (C) Ni
  • (D) Pt

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Q. The major constituent of air is

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

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Q. Quartz crystals normally used in quartz clocks etc. is chemically

  • (A) Germanium oxide
  • (B) Sodium silicate
  • (C) Silicon dioxide
  • (D) A mixture of germanium oxide and silicon dioxide

A

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Q. The main source of chemicals which are used in industries is

  • (A) Coal tar
  • (B) Peat
  • (C) Coke
  • (D) Liquefied Petroleum Gas

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