Chemical Engineering MCQs

Page No. 358

Which of the following is not an ore of uranium ?


aPitchblende


bKyanite


cKyanite


dRescolite


View Answer Kyanite

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


aSustainment of chain reaction


bPower generation on commercial scale


cEconomic power generation


dNone of these



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


aIsomers


bIsotopes


cIsobars


dIsotones


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


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


cResistance to effects of irradiation


dAll A., B. and C.


View Answer All A., B. and C.

Radioactivity of an isotope is expressed in______________________?


aBarn


bBarn


cCurie


dErgs


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


b1/8


c1/2


d1/16


View Answer 1/16

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


aα & β


bβ & γ


cγ & α


dα, β, & γ


View Answer β & γ

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


aTemperature


bPressure


cAmount of element present


dNone of these


View Answer None of these

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


aTemperature


bPressure


cAmount


dNone of these


View Answer None of these

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


aFuel elements


bOperating personnels


cWalls of the reactor


dNone of these


View Answer Operating personnels

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