Nuclear Power Engineering MCQs

Question 1

The atomic number of an element is equal to the number of __________ present in its atom.

Accepted Answer

Either B or C

Answer

Neutrons

Answer

Electrons

Answer

Protons

Question 2

The specific heats of three gaseous coolants namely H 2 , He and CO 2 in the increasing order are

Accepted Answer

CO 2 , He, H 2

Answer

CO 2 , H 2 , He

Answer

H 2 , He, CO 2

Answer

H 2 , CO 2 , He

Question 3

The mass number of an element is not changed, when it emits __________ radiations.

Accepted Answer

β & γ

Answer

α & β

Answer

γ & α

Answer

α, β, & γ

Question 4

Radioactive decay of a material involves a __________ order reaction.

Accepted Answer

First

Answer

Third

Answer

Second

Answer

Zero

Question 5

Function of control rod in a nuclear reactor is to control

Accepted Answer

Absorption of neutrons

Answer

Temperature

Answer

Pressure

Answer

Fuel consumption

Question 6

An ideal coolant for a nuclear reactor should

Accepted Answer

Be free from radiation damage and non-corrosive

Answer

Be a good absorber of neutrons

Answer

Be capable of attaining high temperature, only when it is pressurised

Answer

Have high density, but low heat transfer co-efficient

Question 7

The mass number of an element is equal to the number of __________ in the nucleus.

Accepted Answer

Neutrons plus protons (i.e., nucleons)

Answer

Electrons

Answer

Neutrons

Answer

Protons

Question 8

The ratio of volume of an atom to that of its nucleus is

Accepted Answer

10 12

Answer

10 -12

Answer

10 -8

Answer

10 8

Question 9

Heavy water used in the nuclear reactors to slow down the speed of neutrons is

Accepted Answer

A compound of oxygen and deuterium

Answer

Highly purified water

Answer

Water having dissolved salts of heavy metals

Answer

None of these