Related Questions

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
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
CANDU type nuclear reactor using natural uranium as fuel is the extensively used nuclear reactor because of the fact that the
A Specific fuel consumption is very low due to the use of heavy water
B Fuel cost is much lower than that used in pressurised water or boiling water reactor
C Heavy water is used both as coolant as well as moderator
D Both B and C
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
Enrichment of uranium is done to increase the concentration of __________ in the natural uranium.
A U-235
B U-233
C U-238
D PU-239
In the gaseous diffusion process of uranium enrichment, the natural uranium is converted into gaseous
A Uranium oxide
B Uranium hexaflouride
C Uranium carbide
D Uranium sulphate
Percentage of natural uranium present in uranium ore found in Jadugoda (Jharkhand) is
A 0.1
B 1
C 3
D 12
Which is the most commonly used molten metal for cooling of nuclear reactors?
A Zinc
B Sulphur
C Sodium
D Manganese
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

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