1.
Neutrons have mass approximately equal to that of __________ atoms.

2.
The half life period of a radiactive element is 100 days. After 400 days, one gm of the element will be reduced to __________ gm.

3.
Nucleus of tritium has __________ neutrons.

4.
Nuclear reactors are provided with shield to guard against the emission of mainly __________ rays.

5.
Final product of uranium extraction plant at Jadugoda (Bihar) is

6.
Uranium Corporation of India Limited (UCIL) engaged in the mining & concentration of uranium ore is located at

7.
Which of the following is not used as a moderator in nuclear reactor?

8.
MeV is the unit of

9.
The main purpose of control rod in a nuclear reactor is to control the

10.
Indian monazite sand contains __________ percent thorium.

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