Nuclear Power Engineering - Study Mode
[#86] Which of the following isotopes is not present in natural uranium?
Correct Answer
(D) U-232
[#87] Emission of β-particles during radioactive decay of a substance is from
Correct Answer
(B) Nucleus
[#88] The half life period of a radioactive substance is best determined by counting the number of alpha particles emitted per second in a Geiger Muller counter from its known quantity. If the half life period of a radioactive substance is one month, then
Correct Answer
(B) It will completely disintegrate in two months
[#89] The amount of a radioisotope remaining undecayed after a time equal to four times its half life, will be __________ percent.
Correct Answer
(B) 6.25
[#90] Pressure of CO 2 gas (which is a coolant) in the Calder-Hall nuclear reactor is __________ kgf/cm 2 .
Correct Answer
(B) 7