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


bCO2 gas cooled


cPressurised water


dBoiling water


View Answer Boiling water

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


aUranium-238


bThorium-233


cPlutonium-239


dNone of these


View Answer Plutonium-239

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


aHigh carbon steel


bMolybdenum


cZircaloy


dBoron or cadmium


View Answer Boron or cadmium

Percentage of U-238 in natural uranium is around__________________?


a0.71


b99.29


c0.015


d29.71


View Answer 99.29

Which of the following is not a good moderating material ?


aConcrete


bBoron


c18/8 stainless steel


dAll A., B. and C.


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


bThermal efficiency of the former is higher


cMaintenance cost of the former is less


dNone of these



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


aH2


bN2


cHe


dCO2


View Answer H2

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


aγ-rays


bα-rays


cNeutrons


dNone of these


View Answer γ-rays

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


aUranium


bUranium oxide


cUranium carbide


dMagnesium diuranate


View Answer Magnesium diuranate

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


aThorium-233


bUranium-235


cUranium-233


dPlutonium-239


View Answer Uranium-233

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