The nuclear power plant at Tarapur has the following reactor________________?
(A) fast breeder
(B) pressurised water
(C) boiling water
(D) sodium graphite
(D) none of the above
Reflector in nuclear plants is used to________________?
(A) return the neutrons back into the core
(B) shield the radioactivity completely
(C) check polllution
(D) conserve energy
(D) is not used
The commonly used material for shielding is__________________?
(A) lead or concrete
(B) lead and tin
(C) graphite or cadmium
(D) thick galvanised sheets
(D) black carbon papers
Plutonium-239 is produced__________________?
(A) as basic raw material
(B) by neutron irradiation of IT*
(C) by neutron irradiation of thorium
(D) artificially
(D) in high capacity furnaces
Pick up the wrong statement Fast breeder reactors__________________?
(A) operate at extremely high power densities.
(B) are liquid-metal cooled
(C) produce more fuel than they consume
(D) are unmoderated
(D) use water as coolant
The unit of radio-activity is_____________?
(A) electron-volt
(B) electron-ampere
(C) curie
(D) MeV
(D) AMU
Uranium-233 is produced__________________?
(A) as basic raw material
(B) by neutron irradiation of Uz
(C) by neutron irradiation of thorium
(D) artificially
(D) in high capacity furnaces
Plutonium is produced________________?
(A) as basic raw material
(B) by neutron irradiation of Uz
(C) by neutron irradiation of throium
(D) artificially
(D) in high capacity furnace
Natural uranium is made up of__________________?
(A) 99.282% U238, 0.712% U235, 0.006% U234
(B) 99.282% U235, 0.712% U238, 0.06%’ U234
(C) 99.282% U234, 0.712% U238, 0.006% U235
(D) 99.282% U235, 0.712% U234, 0.006% U238
(D) none of the above
Enriched uranium may contain fissionable contents of the order of__________________?
(A) 1-99%
(B) 1-25%
(C) 1-50%
(D) 1-75%
(D) 1-90%.