Chemical Engineering MCQs

Page No. 544

In the reversible reaction of the type, A + B ⇌ AB, in general__________________?


aBoth forward and backward reactions will be exothermic

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bNeither of the reactions will be endothermic

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cThe combination reaction will be exothermic, while the dissociation reaction will be endothermic

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dThe combination reaction will be endothermic, while the dissociation reaction will be exothermic

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In case of physical adsorption, the heat of adsorption is of the order of _____________ kcal/kg mole?


a100

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b1000

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c10000

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d100000

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View Answer 1000

Which of the following is a controlling factor in very fast heterogeneous reaction ?


aHeat and mass transfer effects

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bPressure

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cTemperature

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dComposition of reactant

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For a zero order chemical reaction, the__________________?


aHalf life period is directly proportion to the initial concentration of the reactants

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bPlot of products concentration with time is a straight line through the origin

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cProducts concentration increases linearly with time

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dAll A., B. and C.

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View Answer All A., B. and C.

An imbalanced chemical reaction equation is against the law of________________?


aMultiple proportion

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bConservation of mass

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cConstant proportion

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dNone of these

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View Answer Conservation of mass

______________ is the response curve for a step input signal from a reactor ?


aS-curve

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bC-curve

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cI-curve

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dNone of these

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View Answer C-curve

‘N’ plug flow reactors in series with a total volume ‘V’ gives the same conversion as a single plug flow reactor of volume ‘V’ for _______________ order reactions?


aFirst

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bSecond

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cThird

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dAny

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View Answer Any

Enzymes are destroyed, when the_______________?


aTemperature is very high

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bReactant’s concentration is very high

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cReactant’s concentration is very low

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dReaction rate is independent of the reactant’s concentration

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Ionic reactions occur in____________________?


aSolid state only

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bLiquid state only

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cSolutions

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dAny state

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View Answer Solutions

With decrease in temperature, the equilibrium conversion of a reversible endothermic reaction_________________?


aDecreases

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bIncreases

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cRemain unaffected

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dIncreases linearly with temperature

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View Answer Decreases

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