Thorium-(a fertile material) on absorption of a neutron gets converted into __________ , which is a fissile material.
A fast breeder reactor
Heavy water has maximum density at __________ °C.
Pick out the wrong statement.
Artificially produced radioactive isotopes are used for
In a homogeneous nuclear reactor, the __________ are mixed together.
Nuclear reactors are provided with shield to guard against the emission of mainly __________ rays.
Percentage of heavy water in ordinary water is around
Ceramic nuclear metals compared to solid nuclear metals have
The most abundant isotope of natural uranium is
Out of the following, nucleus of __________ atom contains the largest number of neutrons.
Mass of a positron is same as that of a/an
Biological shield is provided in a nuclear power reactor to protect the __________ from radiation damage.
Which of the following is not used as a moderator in nuclear reactor ?
The mass number of an element is equal to the number of __________ in the nucleus.
Plutonium
Secondary cooling circuit is a must in molten sodium cooled fast breeder reactor for
H2 is a better coolant than CO2, due to its relatively
Safety rods provided in nuclear reactors to guard against accidents, in case of earthquake are made of
Commercial power generation from fusion reactor is not yet possible, because
Fast breeder reactors are most usable in India, because of our largest __________ deposits.
Isotopes of an element have different
Radioactive decay of a material involves a __________ order reaction.
In β-decay of radioactive material, the ratio of neutron to proton
The half life period of a radioactive element depends upon the
A control rod
Number of secondary neutron emitted on fission of an atom of U-by slow neutron bombardment is
The main purpose of control rod in a nuclear reactor is to control the
The half life period of a radiactive element isdays. Afterdays, one gm of the element will be reduced to __________ gm.
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