Chemical Engineering MCQs

Page No. 821

Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of ______________ will facilitate the most accurate measurement of the temperature ?


aCopper

✓


bSteel

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cAluminium

✖


dBrass

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View Answer Copper

Which of the following is an unconventional source of energy ?


aThermal power

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bHydroelectric power

✖


cNuclear-fusion power

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dSolar power

✓


View Answer Solar power

Wave length of X-rays is about 1 angstrom; however it cannot pass through a sheet of ________________?


aPaper

✖


bCloth

✖


cLead

✓


dAluminium

✖


View Answer Lead

For infinite parallel planes having emissivities ε1 & ε2, the interchange factor for radiation from surface 1 to surface 2 is given by__________________?


a(ε1 + ε2)/ε1.ε2

✖


bε1.ε2/(ε1 + ε2 – ε1.ε2)

✓


cε1.ε2

✖


dε1 + ε2

✖



The function of neutral flux used in the pyrometallurgy of metal extraction is to increase the _____________ of the slag ?


aFluidity

✓


bBasicity

✖


cAcidity

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dViscosity

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View Answer Fluidity

The same volume of all gases is representative of their_____________________?


aSpecific gravities

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bDensities

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cGas characteristic constants

✖


dMolecular weights

✓


View Answer Molecular weights

‘Amortization’ in respect of financial obligation of a company means the_____________________?


aLiquidation of financial obligations on instalment basis

✓


bCommitment of financial obligation on priority

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cLiquidation of all the obsolete equipments of the company

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dModernisation of the plant equipments

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The surface tension of a liquid, at critical temperature is____________________?


aIndeterminate

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bZero

✓


cInfinity

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dSame as that at any other temperature

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View Answer Zero

The lightest non-inflammable gas is_________________?


aH2

✖


bHe

✓


cAr

✖


dO2

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View Answer He

Nickel and ______________ are the alloying element added in steel to increase its toughness?


aMolybdenum

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bChromium

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cVanadium

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dSilicon

✓


View Answer Silicon

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