Heavy water (D2O) in a nuclear reactor serves as a_______________?

Related Mcqs:

1. A thermal nuclear reactor compared to a fast breeder reactor ?

   A. Uses slower neutrons for fission
   B. Uses faster neutrons for fission
   C. Gives higher power density
   D. Requires less fuel to run at the same power level

2. Candu reactor is a ______________ nuclear reactor?

   A. Natural uranium fuelled heavy water cooled & moderated
   B. Highly enriched uranium (85% U-235) fuelled
   C. Homogeneous
   D. Fast breeder

3. Heavy water used in the nuclear reactors to slow down the speed of neutrons is __________________?

   A. Highly purified water
   B. A compound of oxygen and deuterium
   C. Water having dissolved salts of heavy metals
   D. None of these

4. Heavy water is preferred over ordinary water as a coolant, because it?

   A. Acts both as an efficient coolant as well as a moderator
   B. Can be heated to a higher temperature without pressurizing
   C. Is less prone to radiation damage
   D. All A., B. and C.

5. Percentage of heavy water in ordinary water is around__________________?

   A. 0.015
   B. 7.54
   C. 0.71
   D. 32.97

6. Percentage of the heavy water in ordinary water is around ____________________?

   A. 0.015
   B. 7.54
   C. 0.71
   D. 32.97

7. Net efficiency of ordinary light water cooled nuclear reactor is about _____________ percent?

   A. 32
   B. 52
   C. 72
   D. 88

8. The most commonly used nuclear fuel in boiling water reactor is___________________?

   A. Enriched uranium
   B. Natural uranium
   C. Plutonium
   D. Monazite sand

9. Nuclear fuel usually used in a Boiling Water Reactor (BWR) is__________________?

   A. Plutonium
   B. Enriched uranium
   C. Natural uranium
   D. Thorium

10. ‘Light water’ used as a coolant in nuclear reactor is nothing but______________________?

    A. Ordinary water
    B. Mildly acidic (pH = 6) water
    C. Mildly alkaline (pH = 8) water
    D. None of these