491. The most commonly used moderator in nuclear plants is
A.Heavy water
B.Graphite.
C.Graphite and concrete
D.Deutrium

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492. The nuclear energy is measured as
A.MeV
B.Curie
C.Farads
D.MW

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493. The total energy released in fission of U235 is
A.5 MeV
B.10 MeV
C.199 MeV
D.168 MeV

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494. Breeder reactor has a conversion ratio of
A.Unity
B.More than unity
C.Less than unity
D.Zero

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495. Boiling water reactor employs
A.Boiler
B.Direct cycle of coolant system
C.Double circuit system of coolant cycle
D.Multi pass system

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496. Fast breeder reactor uses
A.Boiler
B.Direct cycle of coolant system
C.Double circuit system of coolant cycle
D.Multi pass system

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497. One gram of uranium will produce energy equivalent to approximately
A.1 tonne of high grade coal
B.4.5 tonnes of high grade coal
C.10 tonnes of high grade coal
D.100 tonnes of high grade coal

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