3561. Which of the following may not need a control rod ?
Liquid metal cooled reactor.
Fast breeder reactor.
Candu reactor.
None of these.
✅ The correct answer is option D.
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.
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.
3571. The half life period of a radioactive element depends upon the
temperature
pressure
amount of element present
none of these
✅ The correct answer is option D.
3575. Velocity of the thermal neutron (< 0.025 eV) used for fission of U-235 is around __________ m/sec.
1
2200
3 x 1011
9 x 1021
✅ The correct answer is option B.
3580. Molten sodium is used as a coolant in a fast breeder reactor, because of its
excellent moderating properties.
neutron breeding capability.
faster heat removal capability from the core.
capability to increase the reaction rate in the core.
✅ The correct answer is option C.
3585. Nuclear power generation capacity in India is
3000 MW.
10000 MW.
more than hydroelectric power generation capacity.
more than thermal power generation capacity.
✅ The correct answer is option A.
3591. Nuclear power reactor located at Tarapur is of __________ type.
fast breeder
pressurised water
boiling water
gas cooled
✅ The correct answer is option C.
3559. __________ gas is normally not used as a coolant in a nuclear reactor, because of its high neutron capture cross-section.
Nitrogen
Hydrogen
Helium
Carbon dioxide
✅ The correct answer is option A.
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.