The number of neutrons accompanying the formation of 54Xe139 and 38Sr94 from the absorption of a slow neutron by 92U235, followed by nuclear fission is __________________?
A. 1
B. 2
C. 3
D. 4
An ideal coolant for a nuclear reactor should ________________?
A. Be a good absorber of neutrons
B. Be capable of attaining high temperature, only when it is pressurised
C. Have high density, but low heat transfer co-efficient
D. Be free from radiation damage and non-corrosive
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.
A. Research
B. Power
C. Breeder
D. Homogeneous
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.