Which of the following are ferrite materials__________________?

A. U233andpu239
B. U
C. U238andpu239
D. U238andth239

Enriched uranium is one in which__________________?

A. %age of u235 has been artificially in-creased
B. %age of u has been artificially increased
C. %age of u234 has been artificially in-creased
D. Extra energy is pumped from outside

Which of the following is the heaviest________________?

A. Neutron
B. Proton
C. Atom
D. Electron

The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is________________?

A. Same
B. Lower
C. Higher
D. Unity

A nuclear fission produces energy of following order in MeV___________________?

A. 20
B. 200
C. 2000
D. 20,000

The process by which a heavy nucleus is splitted into two light nuclei is known as_________________?

A. Splitting
B. Fission
C. Fusion
D. Disintegration

The fast breeder reactor uses the following moderator__________________?

A. demineralised water
B. carbon dioxide
C. heavy water
D. graphite

The mass number of a substance represents the sum of total number of___________________?

A. Protons and neutrons in an atom
B. Protons and electrons in an atom
C. Neutrons and electrons in an atom
D. Protons and neutrons in a nucleus

A nuclear fission is initiated when the critical energy as compared to neutron binding energy of the atoms is_________________?

A. Same
B. More
C. Less
D. There is no such criterion

Gas cooled reactor uses following materials as moderator, and coolant____________________?

A. Graphite, c02
B. Graphite, air
C. Heavy water, c02
D. Lead, h2