A radioactive substance does not emit________________?
A radioactive substance does not emit________________?
A. α-ray
B. Proton
C. Position
D. β-ray
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The mass number of an element is not changed, when it emits _______________ radiations?
The mass number of an element is not changed, when it emits _______________ radiations?A. α & β
B. β & γ
C. γ & α
D. α, β, & γWhich of the following types of nuclear reactors is most prone to radioactive hazards ?
Which of the following types of nuclear reactors is most prone to radioactive hazards ?A. Pressurised water reactor
B. Gas cooled reactor
C. Molten sodium cooled reactor
D. Boiling water reactorPercentage of U-238 in natural uranium is around__________________?
Percentage of U-238 in natural uranium is around__________________?A. 0.71
B. 99.29
C. 0.015
D. 29.71‘Light water’ used as a coolant in nuclear reactor is nothing but______________________?
‘Light water’ used as a coolant in nuclear reactor is nothing but______________________?A. Ordinary water
B. Mildly acidic (pH = 6) water
C. Mildly alkaline (pH = 8) water
D. None of theseMolten sodium is used as a coolant in a fast breeder reactor, because of its_________________?
Molten sodium is used as a coolant in a fast breeder reactor, because of its_________________?A. Excellent moderating properties
B. Neutron breeding capability
C. Faster heat removal capability from the core
D. Capability to increase the reaction rate in the coreHeavy water has maximum density at ______________ °C ?
Heavy water has maximum density at ______________ °C ?A. 4
B. 11.6
C. 0
D. 18.6