Chemical Engineering MCQs

Page No. 359

H2 is a better coolant than CO2, due to it‟s relatively____________________?


aLower density

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bHigher specific heat

✓


cNon-reactivity to uranium

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dLower neutron capture cross-section

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View Answer Higher specific heat

Which of the following accounts for the maximum energy release in the nuclear fission process ?


aKinetic energy of fission products

✓


bRadioactive decay of fission products

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cInstantaneous release of γ-rays

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dKinetic energy of neutrons

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The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron?


a159

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b1837

✓


c2537

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d10000

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View Answer 1837

In the gaseous diffusion process of uranium enrichment, the natural uranium is converted into gaseous ________________?


aUranium oxide

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bUranium hexafluoride

✓


cUranium carbide

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dUranium sulphate

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View Answer Uranium hexafluoride

Enrichment of uranium is done to increase the concentration of ______________ in the natural uranium?


aU-238

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bU-233

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cU-235

✓


dPu-239

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View Answer U-235

A pressurised water reactor (PWR) uses pressurised water as a___________________?


aCoolant

✓


bWorking fluid in power turbine

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cModerator

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dNone of these

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View Answer Coolant

Critical energy should be _______________ the neutron binding energy of the atom in order to initiate a nuclear fission?


aEqual to

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bLess than

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cMore than

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dEither more or less

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View Answer More than

Hydrogen has ______________ isotopes?


aNo

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bOne

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cTwo

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dThree

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View Answer Three

Which of the following is not used as a moderator in nuclear reactor ?


aMolten sodium

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bLight water

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cBeryllium

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dBoron hydride

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View Answer Molten sodium

Which is not a fissile nuclear material ?


aU-233

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bU-235

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cU-238

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dPu-239

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View Answer U-238

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