Chemical Engineering MCQs

Page No. 367

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


aPlutonium

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bEnriched uranium

✓


cNatural uranium

✖


dThorium

✖


View Answer Enriched uranium

____________ moderator is used in a fast breeder reactor?


aGraphite

✖


bHeavy water

✖


cBeryllium

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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

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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

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cPressurising the water in the primary coolant circuit

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dNone of these

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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

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bA – Z

✓


cA

✖


dZ

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View Answer A – Z

Hydrogen differs from deuterium in _____________ properties?


aRadioactive

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bPhysical

✓


cChemical

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dAll A., B. and C.

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View Answer Physical

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


aUranium-235

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bUranium-233

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cPlutonium-239

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dBoth B. and C.

✓


View Answer Both B. and C.

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