Chemical Engineering MCQs

Page No. 818

A pycnometer is used for the measurement of________________________?


aFlow rate of molten metal


bSpecific gravity of a liquid


cComposition of alloys


dConcentration of a solution



Wavelength of radiation emitted by a body depends on the ________________ of its surface?


aTemperature


bArea


cNature


dAll ‘A’, ‘B’ & ‘C’


View Answer Temperature

Which of the following metals is the most prone to work hardening ?


aBrass


bAluminium


cCopper


dLead


View Answer Brass

A cylindrical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poisson’s ratio of the rod is___________________?


a0


b0.33


c0.44


d0.25


View Answer 0.44

Working of linear variable differential transducer (LVDT) is based on the principle of variable_____________________?


aCapacitance


bResistance


cMutual inductance


dNone of these


View Answer Mutual inductance

The dimensional formula of bulk modulus of elasticity is same as that of the ____________________?


aPressure


bDensity


cForce


dNone of these


View Answer Pressure

A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material ?


aSteel


bGlass


cRubber


dBrass


View Answer Steel

The expected efficiency of a single riveted lap joint is of the order of 50%. If the thickness of the plate is increased four times, then the rivet diameter will have to be increased ___________________ times ?


aTwo


bFour


cSix


dEight


View Answer Two

In TIG welding, thoriated tungsten electrodes are used, because it ____________________?


aHas higher current carrying capacity


bHas better electron emissivity


cIs stronger than ordinary tungsten


dIs easy to prepare



In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which of the following is a cermet ?


aZirconia


bAlumina


cBakelite


dTungsten carbide


View Answer Tungsten carbide

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