Hydrogen bomb employs the nuclear fusion of __________________ ?
Hydrogen bomb employs the nuclear fusion of __________________ ?
A. Hydrogen
B. Deuterium
C. Tritium
D. Helium
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Radioactive decay is a _____________ change?
Radioactive decay is a _____________ change?A. Chemical
B. Nuclear
C. Physical
D. None of thesePercentage of the heavy water in ordinary water is around ____________________?
Percentage of the heavy water in ordinary water is around ____________________?A. 0.015
B. 7.54
C. 0.71
D. 32.97Moderating material used in a thermal-reactor should be a ____________________?
Moderating material used in a thermal-reactor should be a ____________________?A. Good absorber of neutrons
B. Solid substance
C. Poor absorber of neutrons
D. None of theseA moderator _____________ the neutrons?
A moderator _____________ the neutrons?A. Slows down
B. Absorbs
C. Accelerates
D. ReflectsEmission of β-particles during radioactive decay of a substance is from__________________?
Emission of β-particles during radioactive decay of a substance is from__________________?A. Innermost shell
B. Nucleus
C. Outermost shell
D. None of theseWhich of the following may not need a moderator ?
Which of the following may not need a moderator ?A. Candu reactor
B. Fast breeder reactor
C. Homogeneous reactor
D. Pressurised water reactor