Lakshya Education MCQs

Question: Use of molten metal as a coolant in fast breeder reactor helps in
A.Rapid heat transfer from the core
B.Accelerating the reaction rate in the core
C.Breeding neutrons
D.Accelerating the neutrons
Answer: Option A

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More Questions on This Topic :

Question 1. Fuel for a fast breeder reactor is
  1.    Plutonium
  2.    Uranium
  3.    Radium
  4.    Neptunium
Answer: Option A
Question 2. The time taken for a radioactive element to reduce to 50% of its original weight is __________ years, if its half life period is 12 years.
  1.    24
  2.    18
  3.    6
  4.    36
Answer: Option B
Question 3. Uranium is recovered from its ore (pitchblende) by
  1.    Froth floatation technique
  2.    Leaching with sulphuric acid
  3.    Smelting in a furnace
  4.    Dissolving in water
Answer: Option B
Question 4. Hydrogen bomb employs the nuclear fusion of
  1.    Hydrogen
  2.    Deuterium
  3.    Tritium
  4.    Helium
Answer: Option B
Question 5. Heavy water used in the nuclear reactors to slow down the speed of neutrons is
  1.    Highly purified water
  2.    A compound of oxygen and deuterium
  3.    Water having dissolved salts of heavy metals
  4.    None of these
Answer: Option B
Question 6. Radioactive decay is a __________ change.
  1.    Chemical
  2.    Nuclear
  3.    Physical
  4.    None of these
Answer: Option B

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