Chemical Engineering MCQs

Page No. 367

Nuclear fuel usually used in a Boiling Water Reactor (BWR) is__________________?


aPlutonium


bEnriched uranium


cNatural uranium


dThorium


View Answer Enriched uranium

____________ moderator is used in a fast breeder reactor?


aGraphite


bHeavy water


cBeryllium


dNo


View Answer No

Velocity of the thermal neutron (< 0.025 eV) used for fission of U-235 is around _____________ m/sec?


a1


b2200


c3 × 1011


d9 × 1021


View Answer 2200

A fast breeder reactor____________________?


aUses natural uranium as fuel


bDoes not require a moderator


cBoth A. and B.


dNeither A. nor B.



Commercial power generation from fusion reactor is not yet possible, because_____________________?


aIt is difficult to control fusion reaction


bThe fuel required (e.g. deuterium and tritium) is scarce


cIt is difficult to initiate fusion reaction


dQuantity of fuel required for initiating fusion reaction is prohibitively high



The main ore of uranium is ______________________?


aPitchblende


bMonazite sand


cCassiterite


dChalcopyrite


View Answer Pitchblende

Pressure in a Pressurised Water Reactor (PWR) is used for ____________________?


aMaintaining constant pressure in the primary cooling circuit under varying loads


bSuperheating the steam


cPressurising the water in the primary coolant circuit


dNone of these



The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element ?


aA + Z


bA – Z


cA


dZ


View Answer A – Z

Hydrogen differs from deuterium in _____________ properties?


aRadioactive


bPhysical


cChemical


dAll A., B. and C.


View Answer Physical

Which of the following is artificially produced as it does not occur in nature ?


aUranium-235


bUranium-233


cPlutonium-239


dBoth B. and C.


View Answer Both B. and C.

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