Chemical Reaction Engineering A catalyst inhibitor Is added in small quantity during the catalyst manufacture itself May be useful for suppressing undesirable side reactions All of these Lessens its selectivity Is added in small quantity during the catalyst manufacture itself May be useful for suppressing undesirable side reactions All of these Lessens its selectivity ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The half life period of a first order reaction is Proportional to the initial concentration of reactants Half the specific rate constant Always the same irrespective of the reaction Dependent on initial concentration of the reactants Proportional to the initial concentration of reactants Half the specific rate constant Always the same irrespective of the reaction Dependent on initial concentration of the reactants ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For a heterogenous catalytic reaction, A + B → C, with equimole feed of A and B, the initial rate - rA0 is invariant with total pressure. The rate controlling step is Surface Kc/(1 + TS) reaction between absorbed A and B in the gas phase Surface reaction between absorbed A and absorbed B Surface reaction between A in the gas phase and absorbed B Desorption of C Surface Kc/(1 + TS) reaction between absorbed A and B in the gas phase Surface reaction between absorbed A and absorbed B Surface reaction between A in the gas phase and absorbed B Desorption of C ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction? 2 3 1 Zero 2 3 1 Zero ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A chemical reaction occurs when the energy of the reacting molecules is __________ the activation energy of the reaction. More than Equal to or more than Equal to Less than More than Equal to or more than Equal to Less than ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following is not a unit of reaction rate? Mole formed/volume of catalyst) (time) None of these Moles for med/(surface of catalyst) (time) Moles formed/volume of reactor) (time) Mole formed/volume of catalyst) (time) None of these Moles for med/(surface of catalyst) (time) Moles formed/volume of reactor) (time) ANSWER DOWNLOAD EXAMIANS APP
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