Chemical Engineering MCQs

Page No. 361

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


a°Angstrom


bFermi


cMicron


dmm


View Answer °Angstrom

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


aOf uncertainty principle


bIt may have isobars


cIt contains neutrons


dIt may have isotopes


View Answer It may have isotopes

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


aNeutrons


bElectrons


cProtons


dEither B. or C.


View Answer Either B. or C.

Neutrons plus protons (i.e., nucleons)


aChemical


bNuclear


cPhysical


dNone of these


View Answer Nuclear

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


aElectrons


bNeutrons


cProtons


dNeutrons plus protons (i.e., nucleons)



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


aIsotopes


bIsobars


cIsotones


dNone of these


View Answer Isobars

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


a20


b200


c1000


d2000


View Answer 200

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


aCalcium


bSodium


cMercury


dZinc


View Answer Sodium

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


a0.015


b7.54


c0.71


d32.97


View Answer 0.015

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


a90U234


b90U238


c90U236


d92U236


View Answer 90U234

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