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


cAluminium


dBrass


View Answer Copper

Which of the following is an unconventional source of energy ?


aThermal power


bHydroelectric power


cNuclear-fusion power


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


dViscosity


View Answer Fluidity

The same volume of all gases is representative of their_____________________?


aSpecific gravities


bDensities


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


cLiquidation of all the obsolete equipments of the company


dModernisation of the plant equipments



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


aIndeterminate


bZero


cInfinity


dSame as that at any other temperature


View Answer Zero

The lightest non-inflammable gas is_________________?


aH2


bHe


cAr


dO2


View Answer He

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


aMolybdenum


bChromium


cVanadium


dSilicon


View Answer Silicon

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