Chemical Engineering MCQs

Page No. 359

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


aLower density


bHigher specific heat


cNon-reactivity to uranium


dLower neutron capture cross-section


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


cInstantaneous release of γ-rays


dKinetic energy of neutrons



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


b1837


c2537


d10000


View Answer 1837

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


aUranium oxide


bUranium hexafluoride


cUranium carbide


dUranium sulphate


View Answer Uranium hexafluoride

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


aU-238


bU-233


cU-235


dPu-239


View Answer U-235

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


aCoolant


bWorking fluid in power turbine


cModerator


dNone of these


View Answer Coolant

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


aEqual to


bLess than


cMore than


dEither more or less


View Answer More than

Hydrogen has ______________ isotopes?


aNo


bOne


cTwo


dThree


View Answer Three

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


aMolten sodium


bLight water


cBeryllium


dBoron hydride


View Answer Molten sodium

Which is not a fissile nuclear material ?


aU-233


bU-235


cU-238


dPu-239


View Answer U-238

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