Chemical Engineering MCQs

Page No. 361

The size of an atom is of the order of one __________________?


a°Angstrom

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bFermi

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cMicron

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dmm

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View Answer °Angstrom

The atomic mass of an element is fractional, because ______________________?


aOf uncertainty principle

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bIt may have isobars

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cIt contains neutrons

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dIt may have isotopes

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View Answer It may have isotopes

The atomic number of an element is equal to the number of ______________ present in its atom?


aNeutrons

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bElectrons

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cProtons

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dEither B. or C.

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View Answer Either B. or C.

Neutrons plus protons (i.e., nucleons)


aChemical

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bNuclear

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cPhysical

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dNone of these

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View Answer Nuclear

The mass number of an element is equal to the number of _____________ in the nucleus?


aElectrons

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bNeutrons

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cProtons

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dNeutrons plus protons (i.e., nucleons)

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_____________ have the same mass number, but different nuclear charge ?


aIsotopes

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bIsobars

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cIsotones

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dNone of these

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View Answer Isobars

Energy produced in the nuclear fission is of the order of _____________ MeV?


a20

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b200

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c1000

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d2000

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View Answer 200

Which is the most commonly used molten metal for cooling of nuclear reactors ?


aCalcium

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bSodium

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cMercury

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dZinc

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View Answer Sodium

Percentage of the heavy water in ordinary water is around ____________________?


a0.015

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b7.54

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c0.71

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d32.97

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View Answer 0.015

The 92U238 emits an a-particle. The product is____________________?


a90U234

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b90U238

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c90U236

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d92U236

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View Answer 90U234

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