Chemical Engineering - Nuclear Power Engineering

21. 

Isotopes of an element have the same

A. number of neutrons
B. mass number
C. electronic configuration
D. atomic weight

Answer: Option C

Explanation:

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22. 

Biological shield is provided in a nuclear power reactor to protect the __________ from radiation damage.

A. fuel elements
B. operating personnels
C. walls of the reactor
D. none of these

Answer: Option B

Explanation:

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23. 

The atomic mass of an element is fractional, because

A. of uncertainty principle.
B. it may have isobars.
C. it contains neutrons.
D. it may have isotopes.

Answer: Option D

Explanation:

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24. 

A heterogeneous reactor is the one, in which the moderator and the

A. coolant are different materials.
B. coolant are present in different phases (e.g., heavy water and graphite).
C. fuel are present in different phases (e.g. uranium and heavy water).
D. none of these.

Answer: Option C

Explanation:

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25. 

Radioactivity of an isotope is expressed in

A. barn
B. MeV
C. Curie
D. Ergs

Answer: Option C

Explanation:

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