Practice Test: Question Set - 08
1. In triggering fission, which types of neutrons are more effective?
- (A) Fast
- (B) Slow
- (C) In bulk
- (D) Static
2. For economical operation of a nuclear plant
- (A) Used fuel should be
reprocessed
- (B) Moderator should be
used
- (C) Coolant should be
employed
- (D) Control rods should
be used
3. The size of the reactor is said to be critical when
- (A) Chain reaction can be
initiated
- (B) It becomes
uncontrollable
- (C) It explodes
- (D) It produces no power
4. Superheated steam is generated in following reactor
- (A) Boiling water
- (B) Gas cooled
- (C) Pressurised water
- (D) All of the above
5. In nuclear fission
- (A) The original elements
change into completely different elements
- (B) The electrons of the
element change
- (C) The molecules
rearrange themselves to form other molecules
- (D) None of the above
6. A fast breeder reactor uses following as fuel
- (A) Enriched uranium
- (B) Plutonium
- (C) Thorium
- (D) U₂₃₅
7. Half life of a radioactive isotope corresponds to the time required for half of the following to decay
- (A) Electrons
- (B) Protons
- (C) Neutrons
- (D) Atom
8. In boiling water reactor, moderator is
- (A) Coolant itself
- (B) Ferrite rod
- (C) Graphite rod
- (D) Liquid sodium metal
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