Chemical Reaction Engineering Rate determining step in a reaction consisting of a number of steps in series is the __________ step. Intermediate Data insufficient; can't be predicted Slowest Fastest Intermediate Data insufficient; can't be predicted Slowest Fastest ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The units of frequency factor in Arhenious equation Depend on the order of the reaction Are the same as those of the rate constant Depend on temperature, pressure etc. of the reaction Are cycles per unit time Depend on the order of the reaction Are the same as those of the rate constant Depend on temperature, pressure etc. of the reaction Are cycles per unit time ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The performance of a cascade of CSTR's can be improved by adding More CSTR's in series A P.F. reactor in series More CSTR's in parallel A P.F. reactor in parallel More CSTR's in series A P.F. reactor in series More CSTR's in parallel A P.F. reactor in parallel ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Carbon particles accummulated on the catalyst used in the gas oil cracking lies in the category of __________ poison. Stability Chemisorbed Deposited Selectivity Stability Chemisorbed Deposited Selectivity ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate expression for a heterogenous catalytic reaction is given by, - rA = K.KA PA(1 + KA.PA + Kr.PR), where K is surface reaction rate constant and KA and KR are absorption equilibrium constants of A and R respectively. If KR PR >> (1 + KA PA), the apparent activation energy EA is equal to (given E is the activation energy for the reaction and ΔHR and ΔHA are the activation energies of adsorption of R and A) E ΔHA + ΔHR E + ΔHA E + ΔHA - ΔHR E ΔHA + ΔHR E + ΔHA E + ΔHA - ΔHR ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following resistances is not involved in a gas phase catalytic (gas- solid) reaction? Surface phenomenon resistance Ash resistance Gas film and pore surface diffusion resistances for products Gas film and pore surface diffusion resistances for reactants Surface phenomenon resistance Ash resistance Gas film and pore surface diffusion resistances for products Gas film and pore surface diffusion resistances for reactants ANSWER DOWNLOAD EXAMIANS APP
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