Chemical Engineering - Nuclear Power Engineering

36. 

Which of the following gases has very high neutron capture cross-section, making it unsuitable as a coolant in nuclear reactor?

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

Answer: Option A

Explanation:

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37. 

The number of neutrons in the nucleus of Uranium-233 (92U233) is

A. 141
B. 92
C. 233
D. 325

Answer: Option A

Explanation:

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38. 

The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron?

A. 159
B. 1837
C. 2537
D. 10000

Answer: Option B

Explanation:

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39. 

Pick out the wrong statement.

A. The ratio of the density of the 'nucleus' to that of the 'atom' is 1012 .
B. α-particle is identical with a doubly charged helium ion.
C. The mass of deuterium atom is half that of helium atom.
D. Gamma rays are high energy electrons.

Answer: Option D

Explanation:

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40. 

The disintegration rate of a radioactive element

A. progressively increases.
B. progressively decreases.
C. remains constant throughout.
D. may increase or decrease depending on the material.

Answer: Option B

Explanation:

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