Chemical Engineering MCQs

Page No. 91

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


aEutectic

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bTriple

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cPlait

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dCritical

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View Answer Triple

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


ax

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bx + 1

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c x + 2

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dx + 3

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View Answer x + 2

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


aTwo temperatures only

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bPressure of working fluid

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cMass of the working fluid

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dMass and pressure both of the working fluid

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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)

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bKp2/Kp1 = (ΔH/R) (1/T2 – 1/T1)

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cKp2/Kp1 = ΔH (1/T2 – 1/T1)

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dKp2/Kp1 = – (1/R) (1/T2 – 1/T1)

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A domestic refrigerator has a/an ____________ cooled condenser?


aWater

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bAir

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cEvaporative

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d Gas

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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

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bMargules

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cGibbs-Duhem

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d Gibbs-Duhem-Margules

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


a+ve

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b 0

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c-ve

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d∞

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View Answer +ve

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


aNickel

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bCopper

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cStainless steel

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dBrass

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View Answer Copper

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


a Zero

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bPositive

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cNegative

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d None of these

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View Answer Negative

Sulphuric acid pickling tanks are lined with__________________?


aNickel

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bRubber

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cAluminium

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dGlass

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View Answer Rubber

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