Chemistry MCQs with answers Page - 8

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Q. Which one of the following is a composite propellant?

  • (A) Polybutadiene, ammonium perchlorate and aluminium powder
  • (B) Nitroglycerine and cellulose nitrate
  • (C) Cellulose nitrate and ammonium perchlorate
  • (D) Kerosene oil and oxygen

A

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Q. Acid and alcohol react to form

  • (A) Acid anhydride and water
  • (B) Ester and water
  • (C) Ketone and water
  • (D) Aldehyde and water

A

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Q. Which of the following is not a compound of calcium?

  • (A) Marble
  • (B) Gypsum
  • (C) Chalk
  • (D) Molybdenum

A

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Q. Graphite and heavy water are two common moderators used in a nuclear reactor. The function of the moderator is to

  • (A) Arrest the chain reaction
  • (B) Slow down neutrons
  • (C) Absorb neutrons
  • (D) Cool the reactor

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Q. For a solution of volatile liquids, the partial vapour pressure of each component in solution is directly proportional to its

  • (A) Mole fraction
  • (B) Molarity
  • (C) Molality
  • (D) Normality

A

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Q. In cold countries alcohol is preferred to mercury as a thermometric liquid because

  • (A) alcohol can be coloured and its level seen easily
  • (B) alcohol is cheaper than mercury
  • (C) alcohol is a better conductor of heat
  • (D) alcohol has a lower freezing point than mercury

A

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Q. The two isotopes of uranium, 235U and 238U have
1. equal number of protons
2. equal number of neutrons
3. 92 protons each
Which of the above statements is/are correct?

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

A

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Q. Heavy water
1. contains more dissolved air
2. contains dissolved minerals and salts
3. has deuterium in place of hydrogen
4. is used in nuclear reactors
The correct statements are:

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

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