Nuclear Power Engineering MCQs

Question 1

Radioactive decay is a __________ change.

Accepted Answer

Nuclear

Answer

Chemical

Answer

Physical

Answer

None of these

Question 2

Pick out the wrong statement.

Accepted Answer

Hydrogen has two isotopes

Answer

Isotopes have the same number of protons & electrons, but different number of neutrons

Answer

In ordinary hydrogen, 1 H 1 and 1 H 2 are present in the ratio 6400:1

Answer

None of these

Question 3

The second underground nuclear test was conducted by India at

Accepted Answer

Pokhran

Answer

Jaisalmer

Answer

Kalpakkan

Answer

Narora

Question 4

The number of neutrons accompanying the formation of 54 Xe 139 and 38 Sr 94 from the absorption of a slow neutron by 92 U 235 , followed by nuclear fission is

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 5

Number of secondary neutron emitted on fission of an atom of U-235 by slow neutron bombardment is

Accepted Answer

3

Answer

235

Answer

200

Answer

92

Question 6

Thorium metal

Accepted Answer

All of the above

Answer

Resembles steel in appearance

Answer

Is less hard (in the range of silver)

Answer

Is highly ductile

Question 7

Net efficiency of ordinary light water cooled nuclear reactor is about __________ percent.

Accepted Answer

32

Answer

52

Answer

72

Answer

88

Question 8

The size of an atom is of the order of one

Accepted Answer

°Angstrom

Answer

Fermi

Answer

Micron

Answer

Mm

Question 9

How many atoms are present in one gm-atom of an element?

Accepted Answer

6 × 10 23

Answer

2 × 10 23

Answer

6 × 10 32

Answer

5 × 10 5