U-238
U-233
U-235
Pu-239
✅ The correct answer is option C.
Chemical Engineering MCQs
Secondary cooling circuit is a must in molten sodium cooled fast breeder reactor for
achieving high degree of superheat in the steam.
faster heat removal rate from the core.
lowering the coolant circulation pressure.
avoiding the mixing of water with radioactive sodium, as it may cause explosion.
✅ The correct answer is option D.
Pressure in a Pressurised Water Reactor (PWR) is used for
maintaining constant pressure in the primary cooling circuit under varying loads.
superheating the steam.
pressurising the water in the primary coolant circuit.
none of these.
✅ The correct answer is option A.
The molecular weight of heavy water is
10
18
20
36
✅ The correct answer is option C.
Fast breeder nuclear reactors using enriched uranium as fuel may contain upto a maximum of __________ percent of U-235 (i.e. fissile material).
15
45
65
85
✅ The correct answer is option D.
The main purpose of control rod in a nuclear reactor is to control the
chain reaction and hence the power output by regulating the number of secondary neutrons causing fission.
emission of hazardous radiation.
conversion of fissile material into fertile material.
velocity of the secondary neutrons.
✅ The correct answer is option A.
Which of the following ores contains maximum percentage of uranium ?
Carnotite
Thorium.
Rescolite
Pitchblende
✅ The correct answer is option D.
Nuclear reactors are provided with shield to guard against the emission of mainly __________ rays.
X
α and β
neutrons & gamma
infrared
✅ The correct answer is option C.
Fast breeder reactors are most usable in India, because of our largest __________ deposits.
thorium
plutonium
uranium
none of these
✅ The correct answer is option A.
Which of the following gases has very high neutron capture cross-section, making it unsuitable as a coolant in nuclear reactor?
N2
He
CO2
H2
✅ The correct answer is option A.