Liquid metal cooled reactor.
Fast breeder reactor.
Candu reactor.
None of these.
✅ The correct answer is option D.
Engineering
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3562. A fast breeder reactor employs
graphite as moderator.
water as coolant.
molten sodium as coolant as well as moderator.
U-235 as fuel.
✅ The correct answer is option D.
3563. Percentage of natural uranium present in uranium ore found in Jadugoda (Jharkhand) is
0.1
1
3
12
✅ The correct answer is option A.
3564. Thermal neutrons which are used to cause the fission of U-235 have energy __________ eV.
< 0.025
> 1
Jan-25
> 200.
✅ The correct answer is option A.
3565. The disintegration rate of a radioactive element
progressively increases.
progressively decreases.
remains constant throughout.
may increase or decrease depending on the material.
✅ The correct answer is option B.
3566. Nucleus of 92U235 contains __________ protons.
92
235
143
325
✅ The correct answer is option A.
3567. Pressure of CO2 gas (which is a coolant) in the Calder-Hall nuclear reactor is __________ kgf/cm2 .
0.2
7
35
50
✅ The correct answer is option B.
3568. Which of the following types of nuclear reactors is most prone to radioactive hazards ?
Pressurised water reactor
Gas cooled reactor
Molten sodium cooled reactor
Boiling water reactor
✅ The correct answer is option D.
3569. Emission of β-particles during radioactive decay of a substance is from
innermost shell
nucleus
outermost shell
none of these
✅ The correct answer is option B.
3570. The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element ?
A+Z
A- Z
A
Z
✅ The correct answer is option B.