Chemical Engineering - Nuclear Power Engineering

46. 

Molten sodium is used as a coolant in a fast breeder reactor, because of its

A. excellent moderating properties.
B. neutron breeding capability.
C. faster heat removal capability from the core.
D. capability to increase the reaction rate in the core.

Answer: Option C

Explanation:

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47. 

Neutrons have mass approximately equal to that of __________ atoms.

A. hydrogen
B. helium
C. deuterium
D. none of these

Answer: Option A

Explanation:

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48. 

Pressure of CO2 gas (which is a coolant) in the Calder-Hall nuclear reactor is __________ kgf/cm2 .

A. 0.2
B. 7
C. 35
D. 50

Answer: Option B

Explanation:

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49. 

The electric power generation cost in nuclear power plant is less than that in a coal based thermal power plant, mainly because the

A. fuel cost per unit power generated is less.
B. thermal efficiency of the former is higher.
C. maintenance cost of the former is less.
D. none of these.

Answer: Option A

Explanation:

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50. 

Heavy water used in the nuclear reactors to slow down the speed of neutrons is

A. highly purified water.
B. a compound of oxygen and deuterium.
C. water having dissolved salts of heavy metals.
D. none of these.

Answer: Option B

Explanation:

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