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


bNeither of the reactions will be endothermic


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


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



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


a100


b1000


c10000


d100000


View Answer 1000

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


aHeat and mass transfer effects


bPressure


cTemperature


dComposition of reactant



For a zero order chemical reaction, the__________________?


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


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


cProducts concentration increases linearly with time


dAll A., B. and C.


View Answer All A., B. and C.

An imbalanced chemical reaction equation is against the law of________________?


aMultiple proportion


bConservation of mass


cConstant proportion


dNone of these


View Answer Conservation of mass

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


aS-curve


bC-curve


cI-curve


dNone of these


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


bSecond


cThird


dAny


View Answer Any

Enzymes are destroyed, when the_______________?


aTemperature is very high


bReactant’s concentration is very high


cReactant’s concentration is very low


dReaction rate is independent of the reactant’s concentration



Ionic reactions occur in____________________?


aSolid state only


bLiquid state only


cSolutions


dAny state


View Answer Solutions

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


aDecreases


bIncreases


cRemain unaffected


dIncreases linearly with temperature


View Answer Decreases

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