Question
51
:
If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2 gm of the same istotope will be __________ days.
1. 10 2. 5 3. 30 4. 20
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Question
56
:
The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element ?
1. A- Z 2. A+Z 3. A 4. Z
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Question
59
:
Thermal nuclear reactors using enriched uranium as fuel contains a maximum of __________ percent fissile material i.e. U-235.
1. 2 2. 1 3. 3 4. 6
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