Related Questions

Heavy water is used as a moderator in a nuclear reactor. The function of the moderator is
A to control the energy released in the reactor
B to absorb neutrons and stop the chain reaction
C to cool the reactor
D to slow down the neutrons to thermal energy
Gold is 19 times as heavy as water and Copper is 9 times as heavy as water. Calculate the ratio in which these two metals should be mixed so that the mixture is 15 times as heavy as water.
A 40
B 41
C 42
D 43
Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has
A High neutron absorption cross-section
B Low moderating efficiency
C High neutron scatter cross-section
D Low neutron absorption cross-section
Ordinary water is not used as a moderator because, it
A Has a low absorption cross-section
B Has a low scattering cross-section
C Absorbs neutrons
D Does not absorb neutrons
'Heavy water' is termed as 'heavy' because it is
A Denser than water
B An oxide of deuterium
C A heavy liquid
D An oxide of heavier isotope of oxygen
In boiling water reactor, moderator is
A Coolant itself
B Ferrite rod
C Graphite rod
D Liquid sodium metal
Boiling water reactor uses the following as moderator, coolant and working fluid
A Ordinary fluid
B Heavy water
C Molten lead
D Hydrogen gas
__________ moderator is used in a fast breeder reactor.
A Heavy water
B Graphite
C No
D Beryllium
Which of the following is used as a moderator in nuclear reactor?
A Thorium
B Graphite
C Radium
D Ordinary water
Where reactor operation is designed with fast neutrons such as in reactors using highly enriched fuel, the moderator used is
A Heavy water
B Graphite
C Carbon dioxide
D No moderator is needed

Next steps