In a pressurized water reactor (PWR), the
A. fuel is natural uranium and heavy water acts both as moderator & coolant
B. coolant water boils in the core of the reactor
C. coolant water is pressurised to prevent bulk boiling of water in the core
D. use of moderator is not required
Answer: Option C
Which of the following is not an ore of uranium?
A. Kyanite
B. Pitchblende
C. Carnotite
D. Rescolite
An ideal coolant for a nuclear reactor should be
A. a good absorber of neutrons
B. capable of attaining high temperature, only when it is pressurised
C. of high density, but of low heat transfer coefficient
D. free from radiation damage & non-corrosive
Decay product of tritium which is a Beta emitter is
A. hydrogen
B. helium
C. deuterium
D. none of these
The function of moderators in nuclear reactor is to
A. slow down the secondary neutrons
B. absorb the secondary neutrons
C. control the chain reaction
D. none of these
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