Which of the following material is normally fissionable?

(a)

U²³⁸

(b)

Th²³²

(c)

Pu²⁴⁰

(d)

U²³⁵

The control rod in a nuclear reactor is made of

(a)

uranium

(b)

cadmium

(c)

graphite

(d)

plutonium

The explosion of the atomic bomb takes place due to

(a)

Nuclear fission

(b)

Nuclear fusion

(c)

Scalteling

(d)

Heating

Energy generation in stars is due to

(a)

chemical reaction

(b)

fission

(c)

fusion of light nuclei

(d)

Fusion of heavy nuclei

Fusion reaction is initiated with the help of
(i) low temp
(ii) high temp
(iii) low press
(iv) high press

(a)

(i) is correct

(b)

(ii) & (iv) are correct

(c)

(i) & (iv) are correct

(d)

(ii) & (iv) are correct