Chemistry MCQs with answers Page - 20

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. Candle is a mixture of

  • (A) Paraffin was and stearic acid
  • (B) Bees wax and stearic acid
  • (C) Higher fatty acids and stearic acid
  • (D) Bees wax and paraffin wax

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Q. Coal is formed from

  • (A) Crude oil
  • (B) Deposit of animal waste
  • (C) Coke
  • (D) Compressed and hardened biomass

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Q. When a gas is subjected to adiabatic expansion, it gets cooled due to

  • (A) No chage in tntropy
  • (B) Loss in kinetic energy
  • (C) Decreases in velocity
  • (D) Energy spent in doing work

A

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Q. The boiling point of water decreases at higher altitudes is due to

  • (A) Low temperature
  • (B) Low atmospheric pressure
  • (C) High temperature
  • (D) High atmospheric pressure

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Q. Global warming may result in

  • (A) Flood
  • (B) cyclone
  • (C) Decrease in forest productivity
  • (D) all of the above

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Q. Which of the following is responsible for blue baby syndrome

  • (A) Fluoride
  • (B) Nitrate
  • (C) Arsenic
  • (D) Lead

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Q. Vitamin C is

  • (A) ascorbic acid
  • (B) nicotinic acid
  • (C) citric acid
  • (D) tartaric acid

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Q. Power alcohol is

  • (A) Absolute alcohol + Methyle alcohol
  • (B) Absoluted alcohol + Petrol
  • (C) Rectified alcohol + Petrol
  • (D) Denatured alcohol + Petrol

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Q. The chemical name of plaster of paris is

  • (A) Calcium Chloride
  • (B) Calcium Nitrate
  • (C) Calcium Sulphate Hydrate
  • (D) None of these

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