Related Questions

A first order reaction is to be treated in a series of two mixed reactors. The total volume of the two reactors is minimum, when the reactors are
A Equal in size
B Of different sizes
C Of such size that the ratio of their volumes is
D None of these
Which is the most commonly used molten metal for cooling of nuclear reactors?
A Zinc
B Sulphur
C Sodium
D Manganese
Nuclear fuel generally used in reactors is uranium oxide instead of uranium, because the former has higher
A Melting point, hence can be subjected to higher temperature
B Density ; hence core volume for a given power output would be smaller
C Resistance to effects of irradiation
D All of the above
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 control rods in the control system of nuclear reactors are used to
A Absorb excess neutrons
B Control fuel consumption
C Control temperature
D All of these
Thermal shield is used in high powered nuclear reactors to
A Protect the walls of the reactor from radiation damage
B Absorb the fast neutrons
C Slow down the secondary neutrons
D Protect the fuel element from coming in contact with the coolant
Pure oxide refractories are generally monocrystaliine in nature and are self bonded __________ bricks are generally used as moderator in nuclear reactors.
A Beryllia
B Carborundum
C Corundum
D Thoria
Which of the following types of nuclear reactors is most prone to radioactive hazards?
A Gas cooled reactor
B Molten Sodium Reactor
C Boiling water reactor
D Pressurised water reactor
Gas cooling as compared to water cooling of nuclear reactors
A Can not attain a high temperature
B Is more efficient as gas has a higher specific heat
C Can produce only saturated steam for feeding to power turbine
D None of these
Safety rods provided in nuclear reactors to guard against accidents, in case of earthquake are made of
A High carbon steel
B Molybdenum
C Zircalloy
D Boron or cadmium

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