Chemical Engineering MCQs

Page No. 366

One ‘amu’ is equivalent to___________________?


a9.31 MeV


b931 eV


c931 Mev


d931 J


View Answer 931 Mev

75% of a radioactive element decays in 6 hours. Its half life period is ______________ hours?


a3/4


b1/6


c3


d4


View Answer 3

Which of the following is not used as a nuclear fuel cladding material ?


aZircaloy


bCadmium


cCeramics


dStainless steel


View Answer Cadmium

The radioisotope used to study the thyroid gland is__________________?


aIodine


bCobalt


cIron


dCarbon


View Answer Iodine

Sodium melts (at atmospheric pressure) at a temperature of ____________ °C?


a58


b58


c348


d588


View Answer 58

A thermal nuclear reactor compared to a fast breeder reactor ?


aUses slower neutrons for fission


bUses faster neutrons for fission


cGives higher power density


dRequires less fuel to run at the same power level



____________ nuclear reactor does not require a heat exchanger to supply steam to power turbine?


aMolten sodium cooled


bHelium cooled


cBoiling water


dPressurised water


View Answer Boiling water

Which of the following radiations is the least penetrating ?


aα-rays


bβ-rays


cγ-rays


dX-rays


View Answer α-rays

Moderating material used in a thermal-reactor should be a ____________________?


aGood absorber of neutrons


bSolid substance


cPoor absorber of neutrons


dNone of these



Atoms of U-238 and U-235 differ in structure by three_____________________?


aElectrons and three protons


bProtons


cNeutrons


dElectrons


View Answer Neutrons

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