The fission chain reaction in a nuclear reactor can be controlled by introducing _______________?
(A) Iron rods
(B) Graphite rods
(C) Cadmium rods
(D) Platinum rods
Average energy required to remove one nucleon from the nucleus is called__________________?
(A) Binding energy per nucleon
(B) Energy of decay
(C) Destruction energy
(D) All of above
Radioactive decay obeys which one of the following law ?
(A) N=Noe-λt
(B) N=Noeλt
(C) N=Noe-λt/2
(D) No=N(1+eλt)
The diameter of an atom is approximately_______________?
(A) 10-12m
(B) 10-11m
(C) 10-10m
(D) 10-14m
Pair production takes place in the vicinity of a heavy nucleus so that_____________?
(A) Net energy is conserved
(B) Net charge is conserved
(C) Net momentum is conserved
(D) All of the above
If one or more of the neutrons emitted during fission cab be used to build up further fission then the reaction is self-sustained and is known as __________________?
(A) Fission reaction
(B) Fusion reaction
(C) Chain reaction
(D) Chemical reaction
Radioactive materials can be identified by measuring their_______________?
(A) Hardness
(B) Density
(C) Mass
(D) Half life
Ina liquid metal fast breeder reactor, the type of uranium used is______________?
(A) 92U235
(B) 92U238
(C) 92U234
(D) 92U239
During the fission process a large amount of______________?
(A) Heat energy is released
(B) Nuclear energy is released
(C) Chemical energy is released
(D) Light energy is released
The unit of radioactivity curie is equal to________________?
(A) 3.74 x 109 disintegration per sec
(B) 3.70 x 1010 disintegration per sec
(C) 3.55 x 1010 disintegration per sec
(D) 3.60 x 1010 disintegration per sec