Chemical Reaction Engineering A catalyst in a chemical reaction Alters the reaction mechanism Decreases the activation energy All of these Increases the frequency of collisions of reacting species Alters the reaction mechanism Decreases the activation energy All of these Increases the frequency of collisions of reacting species ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The synthesis of proteins and metabolism in biological objects occur in the presence of biocatalyst called Fungi None of these Haemoglobin A ferment or an enzyme Fungi None of these Haemoglobin A ferment or an enzyme ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate of the heterogenous catalytic reaction A(g) + B(g) ? C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction isA. absorption of A. Surface reaction between absorbed A and B in the gas phase Absorption of A Surface reaction between A in the gas phase and absorbed B Surface reaction between absorbed A and absorbed B Surface reaction between absorbed A and B in the gas phase Absorption of A Surface reaction between A in the gas phase and absorbed B Surface reaction between absorbed A and absorbed B ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If CA is the quantity of reactants initially present, the quantity left after 'n' half periods will be equal to (CA)1/n (CA)n (CA)1/2n (1/2)n.CA (CA)1/n (CA)n (CA)1/2n (1/2)n.CA ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The units of frequency factor in Arhenious equation Are cycles per unit time Depend on temperature, pressure etc. of the reaction Depend on the order of the reaction Are the same as those of the rate constant Are cycles per unit time Depend on temperature, pressure etc. of the reaction Depend on the order of the reaction Are the same as those of the rate constant ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering With the same reaction time, initial concentration and feed rate, the reaction 2A → B is carried out separately in CSTR and P.F. reactor of equal volumes. The conversion will be Higher in P.F. reactor Higher in CSTR Data insufficient; can't be predicted Same in both the reactors Higher in P.F. reactor Higher in CSTR Data insufficient; can't be predicted Same in both the reactors ANSWER DOWNLOAD EXAMIANS APP
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