Chemical Engineering MCQs

Page No. 818

A pycnometer is used for the measurement of________________________?


aFlow rate of molten metal

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bSpecific gravity of a liquid

✓


cComposition of alloys

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dConcentration of a solution

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


aTemperature

✓


bArea

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cNature

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dAll ‘A’, ‘B’ & ‘C’

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View Answer Temperature

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


aBrass

✓


bAluminium

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cCopper

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dLead

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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

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b0.33

✖


c0.44

✓


d0.25

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View Answer 0.44

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


aCapacitance

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bResistance

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cMutual inductance

✓


dNone of these

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View Answer Mutual inductance

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


aPressure

✓


bDensity

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cForce

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dNone of these

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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

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dBrass

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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

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cSix

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dEight

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View Answer Two

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


aHas higher current carrying capacity

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bHas better electron emissivity

✓


cIs stronger than ordinary tungsten

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dIs easy to prepare

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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

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bAlumina

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cBakelite

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dTungsten carbide

✓


View Answer Tungsten carbide

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