The ratio of volume of an atom to that of its nucleus is__________________?
The ratio of volume of an atom to that of its nucleus is__________________?
A. 1012
B. 10-12
C. 10-8
D. 108
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The sum of masses of two nuclei produced in nuclear fission compared to the mass of original nucleus is_____________________?
The sum of masses of two nuclei produced in nuclear fission compared to the mass of original nucleus is_____________________?A. Less
B. More
C. Same
D. Much moreCoolant used in a fast breeder reactor is____________________?
Coolant used in a fast breeder reactor is____________________?A. Molten sodium
B. Heavy water
C. Ordinary water
D. HeliumThe half life period of a radioactive element depends upon the___________________?
The half life period of a radioactive element depends upon the___________________?A. Temperature
B. Pressure
C. Amount of element present
D. None of theseThe 92U238 emits an a-particle. The product is____________________?
The 92U238 emits an a-particle. The product is____________________?A. 90U234
B. 90U238
C. 90U236
D. 92U236A fast breeder reactor employs___________________?
A fast breeder reactor employs___________________?A. Graphite as moderator
B. Water as coolant
C. Molten sodium as coolant as well as moderator
D. U-235 as fuelUse of molten metal as a coolant in fast breeder reactor helps in_________________?
Use of molten metal as a coolant in fast breeder reactor helps in_________________?A. Rapid heat transfer from the core
B. Accelerating the reaction rate in the core
C. Breeding neutrons
D. Accelerating the neutrons