Which of the following isotopes is not present in natural uranium?
Which of the following isotopes is not present in natural uranium?
A. U-238
B. U-234
C. U-235
D. U-232
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Which of the following is a moderating material used in nuclear reactor ?
Which of the following is a moderating material used in nuclear reactor ?A. Graphite
B. Cadmium
C. Zircaloy (an alloy of zirconium and aluminium)
D. Stainless steelA fast breeder reactor employs___________________?
A fast breeder reactor employs___________________?A. Graphite as moderator
B. Water as coolant
C. Molten sodium as coolant as well as moderator
D. U-235 as fuelWhich of the following may be used to measure the rate of nuclear disintegration ?
Which of the following may be used to measure the rate of nuclear disintegration ?A. Geiger-Muller Counter
B. Cyclotron
C. Cold chamber
D. Mass spectrographThe ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is ___________________?
The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is ___________________?A. 1
B. 0.5
C. 2
D. 4H2 is a better coolant than CO2, due to it‟s relatively____________________?
H2 is a better coolant than CO2, due to it‟s relatively____________________?A. Lower density
B. Higher specific heat
C. Non-reactivity to uranium
D. Lower neutron capture cross-section____________ nuclear reactor does not require a heat exchanger to supply steam to power turbine?
____________ nuclear reactor does not require a heat exchanger to supply steam to power turbine?A. Molten sodium cooled
B. Helium cooled
C. Boiling water
D. Pressurised water