Oxides of Plutonium and Uranium are used as fuel for ________ reactors.

(a)

production

(b)

research

(c)

light water

(d)

prototype fast breeder

Graphite is used as a __________ in nuclear reactors.

(a)

moderator

(b)

coolant

(c)

detector

(d)

fuel

The moderator used in nuclear reactor is ________________.

(a)

Cadmium

(b)

Boron oxide

(c)

Heavy water

(d)

Uranium

In a nuclear reactor, cadmium rods are used to _____________

(a)

speed up neutrons

(b)

slow down neutrons

(c)

absorb neutrons

(d)

remove heat

The explosion of hydrogen bomb is based on the principle of _________________.

(a)

uncontrolled fission reaction

(b)

nuclear fusion reaction

(c)

controlled fission

(d)

photo electric effect