Chemical Engineering MCQs

Page No. 138

If the vapour pressure at two temperatures of a solid phase in equilibrium with its liquid phase are known, then the latent heat of fusion can be calculated by the _________________?


aMaxwell’s equation


bClausius-Clapeyron Equation


cVan Laar equation


dNernst Heat Theorem



Rotary kilns in cement industry are lined with _____________bricks?


aFireclay


bSilica


cLead


dHigh alumina & high magnesia



Pick out the undesirable property for a good refrigerant ?


aHigh thermal conductivity


bLow freezing point


c Large latent heat of vaporisation


dHigh viscosity


View Answer High viscosity

Post weld heat treatment is done by____________________?


aNormalising


bStress relieving


cTempering


dSolution annealing


View Answer Stress relieving

High speed steel tools retain their hardness upto a temperature of _____________ °C?


a500


b750


c900


d1100


View Answer 900

When iron is rusted, it is__________________?


aConverted to a fine powder


bReduced


cOxidised


dNone of these


View Answer Oxidised

Filling of gas from a high pressure cylinder into small bottles is an example of a/an ______________ process?


aEquilibrium


bAdiabatic


cSteady


dUnsteady


View Answer Unsteady

Caustic soda is transported in _____________ lined containers ?


aGlass


bNickel


cNeoprene


dEither B. or C.


View Answer Either B. or C.

_______________ is a donor impurity for semi-conductors ?


aBoron


bAntimony


cGallium


dNone of these


View Answer Antimony

Non-ferrous metals and hard steels do not exhibit a definite yield point, when pulled in the testing machine and hence for these cases, a better measure of their elastic properties is defined by the ______________ stress?


aUltimate


bYield point


cProof


dNone of these


View Answer Proof

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