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


cBreeding neutrons


dAccelerating the neutrons



Isotopes of an element have the same__________________?


aNumber of neutrons


bMass number


cElectronic configuration


dAtomic weight



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


aLiquid metal cooled


bFast breeder


cThermal


dSwimming pool


View Answer Fast breeder

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


a3


b235


c200


d92


View Answer 3

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


aElectron capture


bβ-emission


cα-emission


dPositron emission


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


bEmission of hazardous radiation


cConversion of fissile material into fertile material


dVelocity of the secondary neutrons



Radioactive decay of a material involves a _____________ order reaction?


aThird


bSecond


cFirst


dZero


View Answer First

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


aTalcher (Orissa)


bKaiga (Karnataka)


cRawatbhata (Rajasthan)


dKalpakkam (Tamilnadu)


View Answer Talcher (Orissa)

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


aHomogeneous


bGraphite moderated


cFast breeder


dEnriched uranium (3% U-235) fuelled


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


bIt will completely disintegrate in two months


cIt will completely disintegrate in four months


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



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