Chemical Engineering - Nuclear Power Engineering

1. 

Plutonium

A. is recovered from spent fuel from thermal nuclear reactor.
B. has much lower melting point (640°C ) compared to thorium (1690°C).
C. both (a) and (b).
D. neither (a) nor (b).

Answer: Option C

Explanation:

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2. 

A control rod

A. should have small absorption cross-section.
B. is generally made of boron, hafnium or cadmium.
C. should have large absorption cross-section.
D. both (b) and (c).

Answer: Option D

Explanation:

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3. 

Number of secondary neutron emitted on fission of an atom of U-235 by slow neutron bombardment is

A. 3
B. 235
C. 200
D. 92

Answer: Option A

Explanation:

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4. 

Enriched uranium means that, it contains

A. more than 0.71% of U-235.
B. only fertile material.
C. only fissile material.
D. no impurities.

Answer: Option A

Explanation:

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5. 

The radioisotope used to study the thyroid gland is

A. iodine
B. cobalt
C. iron
D. carbon

Answer: Option A

Explanation:

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