Chemical Engineering MCQs

Page No. 91

At ____________ point, all the three phases (i.e. solid, liquid and gas) co-exist ?


aEutectic


bTriple


cPlait


dCritical


View Answer Triple

For a thermodynamic system containing ‘x’ chemical species, the maximum number of phases that can co-exist at equilibrium is_________________?


ax


bx + 1


c x + 2


dx + 3


View Answer x + 2

Efficiency of a heat engine working on Carnot cycle between two temperature levels depends upon the__________________?


aTwo temperatures only


bPressure of working fluid


cMass of the working fluid


dMass and pressure both of the working fluid


View Answer Two temperatures only

The equilibrium constant for a chemical reaction at two different temperatures is given by__________________?


aKp2/Kp1 = – (ΔH/R) (1/T2 – 1/T1)


bKp2/Kp1 = (ΔH/R) (1/T2 – 1/T1)


cKp2/Kp1 = ΔH (1/T2 – 1/T1)


dKp2/Kp1 = – (1/R) (1/T2 – 1/T1)



A domestic refrigerator has a/an ____________ cooled condenser?


aWater


bAir


cEvaporative


d Gas


View Answer Air

The equation, (d loge PA/d loge xA) = (d loge PA/d loge xB) applicable to a binary solution of components. A and B in equilibrium with their vapors at constant temperature and pressure is called the _____________ equation?


aVan Laar


bMargules


cGibbs-Duhem


d Gibbs-Duhem-Margules



During a reversible isothermal expansion of an ideal gas, the entropy change is_________________?


a+ve


b 0


c-ve


d


View Answer +ve

Tubes of multiple effect evaporator used for concentration of sugar cane juice are made of __________________?


aNickel


bCopper


cStainless steel


dBrass


View Answer Copper

A chemical reaction will occur spontaneously at constant pressure and temperature, if the free energy is________________?


a Zero


bPositive


cNegative


d None of these


View Answer Negative

Sulphuric acid pickling tanks are lined with__________________?


aNickel


bRubber


cAluminium


dGlass


View Answer Rubber

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