Chemical Reaction Engineering Semibatch reactor is preferred, when a/an A gas is to be reacted with liquid (e.g. hydrogenation of fat) A highly exothermic reaction is to be controlled All of these Undersirable side reaction (at high concentration of one of the reactants) is to be avoided A gas is to be reacted with liquid (e.g. hydrogenation of fat) A highly exothermic reaction is to be controlled All of these Undersirable side reaction (at high concentration of one of the reactants) is to be avoided ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The equilibrium constant of chemical reaction __________ in the presence of catalyst. Increases Remains unaffected Can either increase or decrease (depends on the type of catalyst) Decreases Increases Remains unaffected Can either increase or decrease (depends on the type of catalyst) Decreases ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (keff) is given by keff = k + kg 1/keff = 1/k + 1/kg keff = (k+ kg)/2 keff = (kkg)1/2 keff = k + kg 1/keff = 1/k + 1/kg keff = (k+ kg)/2 keff = (kkg)1/2 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In case of __________ reactions, the reaction rate does not decrease appreciably as the reaction proceeds. Parallel Auto catalytic Catalytic Series Parallel Auto catalytic Catalytic Series ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Most important characteristics of gas-liquid reactors are the Specific inter-facial area Liquid hold-up None of these Both A and B Specific inter-facial area Liquid hold-up None of these Both A and B ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following is an autocatalytic reaction? Microbial fermentation reaction Photochemical reactions Enzyme fermentation reaction Ammonia synthesis reaction Microbial fermentation reaction Photochemical reactions Enzyme fermentation reaction Ammonia synthesis reaction ANSWER DOWNLOAD EXAMIANS APP
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