Chemical Reaction Engineering Holding time for flow reactors is __________ the space time, for constant fluid density Double None of these Triple Equal to Double None of these Triple Equal to 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 ΔHA + ΔHR E + ΔHA E E + ΔHA - ΔHR ΔHA + ΔHR E + ΔHA E 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 Selectivity Chemisorbed Deposited Stability Selectivity Chemisorbed Deposited ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following is used for calcination of limestone and dolomite in industrial practice? Fluidised bed reactor Moving bed reactor None of these Fixed bed reactor Fluidised bed reactor Moving bed reactor None of these Fixed bed reactor ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate of a chemical reaction is almost doubled for every 10°C rise in temperature. The rate will increase __________ times, if the temperature rises form 10 to 100°C. 112 612 512 256 112 612 512 256 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Rate of a chemical reaction is independent of the concentration of the reactants for a __________ reaction. Third order Consecutive None of these Zero order Third order Consecutive None of these Zero order ANSWER DOWNLOAD EXAMIANS APP
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