Chemical Engineering MCQs

Page No. 373

Use of molten metal as a coolant in fast breeder reactor helps in_________________?


aRapid heat transfer from the core

✓


bAccelerating the reaction rate in the core

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cBreeding neutrons

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dAccelerating the neutrons

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Isotopes of an element have the same__________________?


aNumber of neutrons

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bMass number

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cElectronic configuration

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dAtomic weight

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Thorium can be converted into U-233 in a _____________ reactor?


aLiquid metal cooled

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bFast breeder

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cThermal

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dSwimming pool

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View Answer Fast breeder

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


a3

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b235

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c200

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d92

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View Answer 3

The decrease in the atomic number is not observed in case of________________?


aElectron capture

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bβ-emission

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cα-emission

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dPositron emission

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View Answer β-emission

The main purpose of control rod in a nuclear reactor is to control the___________________?


aChain reaction and hence the power output by regulating the number of secondary neutrons causing fission

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bEmission of hazardous radiation

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cConversion of fissile material into fertile material

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dVelocity of the secondary neutrons

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Radioactive decay of a material involves a _____________ order reaction?


aThird

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bSecond

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cFirst

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dZero

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View Answer First

Out of the following places, a nuclear power plant is not located at______________?


aTalcher (Orissa)

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bKaiga (Karnataka)

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cRawatbhata (Rajasthan)

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dKalpakkam (Tamilnadu)

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View Answer Talcher (Orissa)

Liquid metal (e.g., molten sodium) is preferred as a coolant in case of a/an ______________ reactor?


aHomogeneous

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bGraphite moderated

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cFast breeder

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dEnriched uranium (3% U-235) fuelled

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View Answer Fast breeder

The half life period of a radioactive substance is best determined by counting the number of alpha particles emitted per second in a Geiger Muller counter from its known quantity. If the half life period of a radioactive substance is one month, then____________?


a3/4th of it will disintegrate in two months

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bIt will completely disintegrate in two months

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cIt will completely disintegrate in four months

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d1/8th of it will remain intact at the end of four months

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