Chemical Engineering MCQs

Page No. 371

Which of the following nuclear reactors is the most efficient thermodynamically while operating between the same temperature and pressure limits of the reactor ?


aMolten sodium cooled

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bCO2 gas cooled

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cPressurised water

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dBoiling water

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View Answer Boiling water

Which of the following is not a naturally occurring nuclear fuel ?


aUranium-238

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bThorium-233

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cPlutonium-239

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dNone of these

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View Answer Plutonium-239

Safety rods provided in nuclear reactors to guard against accidents, in case of earthquake are made of___________________?


aHigh carbon steel

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bMolybdenum

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cZircaloy

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dBoron or cadmium

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View Answer Boron or cadmium

Percentage of U-238 in natural uranium is around__________________?


a0.71

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b99.29

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c0.015

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d29.71

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View Answer 99.29

Which of the following is not a good moderating material ?


aConcrete

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bBoron

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c18/8 stainless steel

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dAll A., B. and C.

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View Answer All A., B. and C.

The electric power generation cost in nuclear power plant is less than that in a coal based thermal power plant, mainly because the________________?


aFuel cost per unit power generated is less

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bThermal efficiency of the former is higher

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cMaintenance cost of the former is less

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dNone of these

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Which is used as a coolant in nuclear reactor due to its high capture cross-section ?


aH2

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bN2

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cHe

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dCO2

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View Answer H2

β-rays emission in radioactive disintegration is always accompanied by the emission of____________________?


aγ-rays

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bα-rays

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cNeutrons

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dNone of these

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View Answer γ-rays

Final product of uranium extraction plant at Jadugoda (Bihar) is________________?


aUranium

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bUranium oxide

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cUranium carbide

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dMagnesium diuranate

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View Answer Magnesium diuranate

Thorium-232 (a fertile material) on absorption of a neutron gets converted into ___________ , which is a fissile material?


aThorium-233

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bUranium-235

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cUranium-233

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dPlutonium-239

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View Answer Uranium-233

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