Chemical Engineering - Nuclear Power Engineering

21. 

Spent fuel from the nuclear thermal reactor contains

A. fission products
B. plutonium
C. unused fuel
D. all (a), (b) & (c)

Answer: Option D

Explanation:

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22. 

A boiling water reactor is the one, in which the

A. coolant water is allowed to boil in the core of the reactor.
B. coolant water, after being heated in the reactor core, generates steam in a boiler.
C. pressurised water is pumped into the core.
D. fuel and the coolant are thoroughly mixed to form a homogeneous solution.

Answer: Option A

Explanation:

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23. 

Which is used as a coolant in nuclear reactor due to its high capture cross-section ?

A. H2
B. N2
C. He
D. CO2

Answer: Option A

Explanation:

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24. 

Moderating material used in a thermal-reactor should be a

A. good absorber of neutrons.
B. solid substance.
C. poor absorber of neutrons.
D. none of these.

Answer: Option C

Explanation:

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25. 

Ordinary water is not used as a moderator because, it

A. has a low absorption cross-section.
B. has a low scattering cross-section.
C. absorbs neutrons.
D. does not absorb neutrons.

Answer: Option C

Explanation:

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