The main purpose of control rod in a nuclear reactor is to control the
A. chain reaction & hence the power output by regulating the number of secondary neutrons for fission
B. emission of hazardous radiation
C. conversion of fissile material into fertile material
D. velocity of the secondary neutrons
Answer: Option A
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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