Chemical Engineering MCQs

Page No. 366

One ‘amu’ is equivalent to___________________?


a9.31 MeV

✖


b931 eV

✖


c931 Mev

✓


d931 J

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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

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View Answer 3

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


aZircaloy

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bCadmium

✓


cCeramics

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dStainless steel

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View Answer Cadmium

The radioisotope used to study the thyroid gland is__________________?


aIodine

✓


bCobalt

✖


cIron

✖


dCarbon

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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

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dRequires less fuel to run at the same power level

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


aMolten sodium cooled

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bHelium cooled

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cBoiling water

✓


dPressurised water

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View Answer Boiling water

Which of the following radiations is the least penetrating ?


aα-rays

✓


bβ-rays

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cγ-rays

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dX-rays

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View Answer α-rays

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


aGood absorber of neutrons

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bSolid substance

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cPoor absorber of neutrons

✓


dNone of these

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


aElectrons and three protons

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bProtons

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cNeutrons

✓


dElectrons

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View Answer Neutrons

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