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.
Related Mcqs:
- Percentage of heavy water in ordinary water is around__________________?
A. 0.015
B. 7.54
C. 0.71
D. 32.97 - Percentage of the heavy water in ordinary water is around ____________________?
A. 0.015
B. 7.54
C. 0.71
D. 32.97 - Liquid metal (e.g., molten sodium) is preferred as a coolant in case of a/an ______________ reactor?
A. Homogeneous
B. Graphite moderated
C. Fast breeder
D. Enriched uranium (3% U-235) fuelled - Water is a better coolant than a gas (like CO2, He, N2 etc.), because it_________________?
A. Is a better neutron moderator as well
B. Require comparatively smaller pumps and heat exchanger for a given heat transfer rate
C. Has a better heat transfer characteristics, and it can be pressurised to attain a high temperature
D. All A., B. and C. - Coolant used in a boiling water reactor is________________?
A. Hydrogen gas
B. Water
C. Steam
D. A mixture of water & steam - ‘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 - 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 - The molecular weight of heavy water is_________________?
A. 10
B. 18
C. 20
D. 36 - Heavy water has maximum density at ______________ °C ?
A. 4
B. 11.6
C. 0
D. 18.6 - Heavy water (D2O) in a nuclear reactor serves as a_______________?
A. Coolant
B. Moderator
C. Both A. & B.
D. Neutron absorber
