Chemistry MCQs with answers Page - 14

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. Hardest allotrope of carbon is

  • (A) Diamond
  • (B) Graphite
  • (C) Coke
  • (D) Lamp black

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Q. Diamond is lustrous because

  • (A) It is colourless
  • (B) It is hard
  • (C) It is pure
  • (D) Its refractive index is high

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Q. Dry ice is

  • (A) Solid ammonia
  • (B) Solid sulphur dioxide
  • (C) Dry carbon dioxide gas
  • (D) Solid carbon dioxide

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Q. Some of the mineral elements required in extremely small quantities (traces) are called microelements. Group of such elements are

  • (A) copper, zinc, magnesium, iron and sulfur
  • (B) zinc, copper, manganese, molybdenum and boron
  • (C) molybdenum, boron, zinc, magnesium and calcium
  • (D) manganese, zinc, iron, boron and calcium

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Q. The substances that can be used as explosives are
1.phosphorous trichloride
2.mercuric oxide
3.trinitrotoluene
4.nitroglycerine
The correct answers are:

  • (A) 3 and 4
  • (B) 2 and 3
  • (C) 1 and 2
  • (D) 2 and 4

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Q. In which of the following groups, are the elements written in the descending order of their respective atomic weights?

  • (A) Oxygen, argon, nitrogen, hydrogen
  • (B) Nitrogen, carbon, oxygen, hydrogen
  • (C) Oxygen, nitrogen, helium, bromine
  • (D) Oxygen, nitrogen, helium, hydrogen

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Q. The organic solvents produced by destructive distillation of wood are
1.Acetone
2.Methanol
3.Ethanol The correct answers are:

  • (A) 1 and 2
  • (B) 2 and 3
  • (C) 1, 2 and 3
  • (D) 1 and 3

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Q. Which of the following gases is present under pressure in soft drinks?

  • (A) Oxygen
  • (B) Nitrogen
  • (C) Carbon dioxide
  • (D) Nitrous oxide

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Q. If we burn graphite

  • (A) Residue will be left
  • (B) No residue will be left
  • (C) It will not burn
  • (D) It will change into diamond

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