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51
The nuclear energy is measured as
Discuss
Answer & Solution
Answer: Option A
Solution:
The nuclear energy is measured as MeV
52
In a fission process, maximum percentage of energy is released as
Discuss
Answer & Solution
Answer: Option B
Solution:
In a fission process, maximum percentage of energy is released as Kinetic energy of fission products
53
Which of the following can be used as a coolant in nuclear plant?
Discuss
Answer & Solution
Answer: Option A
Solution:
A nuclear reactor coolant is a coolant used to remove heat from the nuclear reactor core and transfer it to electrical generators and the environment. Light or heavy water ,Helium and Liquid Sodium can be used as coolant in a nuclear reactor.
54
Natural uranium is made up of
Discuss
Answer & Solution
Answer: Option A
Solution:
Natural uranium is made up of U234 = 0.006%, U235 = 0.712% and U238 = 99.282%.
55
The function of control rods in nuclear plants is to
Discuss
Answer & Solution
Answer: Option C
Solution:
Control rods are used in nuclear reactors to control the fission rate of uranium and plutonium.
They are composed of chemical elements such as boron, silver, indium and cadmium that are capable of absorbing many neutrons without themselves fissioning.
56
Solid fuel for nuclear reactions may be fabricated into various small shapes such as
Discuss
Answer & Solution
Answer: Option D
Solution:
Solid fuel for nuclear reactions may be fabricated into various small shapes such as Plates and Pallets and Pins
57
The fast breeder reactor uses the following moderator
Discuss
Answer & Solution
Answer: Option D
Solution:
No moderator is used in the breeder reactor since fast neutrons are more efficient in transmuting U238 to Pu239. At this concentration of U235, the cross-section for fission with fast neutrons is sufficient to sustain the chain-reaction.
58
Electron volt is the unit of
Discuss
Answer & Solution
Answer: Option B
Solution:
Electron volt is the unit of Energy
59
Which is not identical for an atom and an isotope?
Discuss
Answer & Solution
Answer: Option A
Solution:
Mass number is an integer equal to the sum of the number of protons and neutrons of an atomic nucleus.
60
Enriched uranium is one in which
Discuss
Answer & Solution
Answer: Option A
Solution:
Enriched uranium is a type of uranium in which the percent composition of uranium-235 has been increased through the process of isotope separation. Natural uranium is 99.284% U238 isotope, with U235 only constituting about 0.711% of its mass.