3513. Function of control rod in a nuclear reactor is to control
temperature
pressure
fuel consumption
absorption of neutrons
✅ The correct answer is option D.
3516. The number of neutrons accompanying the formation of 54Xe139 and 38Sr94 from the absorption of a slow neutron by 92U235 , followed by nuclear fission is
1
2
3
4
✅ The correct answer is option C.
3485. __________ moderator is used in a fast breeder reactor.
Graphite
Heavy water
Beryllium
No
✅ The correct answer is option D.
3490. The emission of an a-particle causes the resultant nucleus to have
more atomic weight and less atomic number.
less atomic weight and less atomic number.
less atomic weight and more atomic number.
none of these.
✅ The correct answer is option A.
3495. Thorium can be converted into U-233 in a __________ reactor.
liquid metal cooled
fast breeder
thermal
swimming pool
✅ The correct answer is option B.
3500. Gas cooling as compared to water cooling of nuclear reactors
can not attain a high temperature.
is more efficient as gas has a higher specific heat.
can produce only saturated steam for feeding to power turbine.
none of these.
✅ The correct answer is option D.
3503. Thorium-232 (a fertile material) on absorption of a neutron gets converted into __________ , which is a fissile material.
thorium-233
uranium-235
uranium-233
plutonium-239
✅ The correct answer is option C.
3507. Which of the following may not need a moderator ?
Candu reactor
Fast breeder reactor
Homogeneous reactor
Pressurised water reactor
✅ The correct answer is option B.
3510. Enriched uranium means that, it contains
more than 0.71% of U-235.
only fertile material.
only fissile material.
no impurities.
✅ The correct answer is option A.
3517. Which of the following is not, a fertile material ?
Th-232
U-238
U-233
none of these
✅ The correct answer is option C.