Chemical Engineering MCQs

Page No. 358

Which of the following is not an ore of uranium ?


aPitchblende

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bKyanite

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cKyanite

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dRescolite

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View Answer Kyanite

“Critical mass” is the minimum mass of nuclear fissile material required for the_______________________?


aSustainment of chain reaction

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bPower generation on commercial scale

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cEconomic power generation

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dNone of these

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When the difference between mass number and atomic number of atoms of two or more elements are same, the atoms are termed as____________________?


aIsomers

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bIsotopes

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cIsobars

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dIsotones

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View Answer Isotones

Nuclear fuel generally used in reactors is uranium oxide instead of uranium, because the former has higher _____________________?


aMelting point, hence can be subjected to higher temperature

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bDensity; hence core volume for a given power output would be smaller

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cResistance to effects of irradiation

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dAll A., B. and C.

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View Answer All A., B. and C.

Radioactivity of an isotope is expressed in______________________?


aBarn

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bBarn

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cCurie

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dErgs

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View Answer Curie

The half life period of a radioactive element is 100 days. After 400 days, one gm of the element will be reduced to ______________ gm?


a1/4

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b1/8

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c1/2

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d1/16

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View Answer 1/16

The mass number of an element is not changed, when it emits _______________ radiations?


aα & β

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bβ & γ

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cγ & α

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dα, β, & γ

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View Answer β & γ

The half life period of a radioactive element depends upon the___________________?


aTemperature

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bPressure

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cAmount of element present

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dNone of these

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View Answer None of these

The half life period of a radioactive element depends on its _______________________?


aTemperature

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bPressure

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cAmount

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dNone of these

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View Answer None of these

Biological shield is provided in a nuclear power reactor to protect the ______________ from radiation damage?


aFuel elements

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bOperating personnels

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cWalls of the reactor

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dNone of these

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View Answer Operating personnels

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