Chemical Reaction Engineering In a/an __________ reactor, there is exchange of heat with the surroundings with sizeable temperature variation. Adiabatic None of these Isothermal Non-adiabatic Adiabatic None of these Isothermal Non-adiabatic 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 E + ΔHA - ΔHR ΔHA + ΔHR E + ΔHA E E + ΔHA - ΔHR ΔHA + ΔHR E + ΔHA ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Reaction rate of a first order reaction, which is half completed in 23 minutes will be 0.03 hr⁻¹ 0.03 min⁻¹ 0.05 min⁻¹ 0.03 sec⁻¹ 0.03 hr⁻¹ 0.03 min⁻¹ 0.05 min⁻¹ 0.03 sec⁻¹ ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A first order reaction A → B occurs in an isothermal porous catalyst pellet of spherical shape. If the concentration of A at the centre of the pellet is much less than at the external surface, the process is limited by Diffusion within the pellet External mass transfer Reaction None of these Diffusion within the pellet External mass transfer Reaction None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If ΔG (free energy change) for a chemical reaction is very large and negative, then the reaction is Not feasible Just feasible Unpredictable as ΔG is no measure of feasibility of a reaction Very much feasible Not feasible Just feasible Unpredictable as ΔG is no measure of feasibility of a reaction Very much feasible ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Most important characteristics of gas-liquid reactors are the Liquid hold-up None of these Both A and B Specific inter-facial area Liquid hold-up None of these Both A and B Specific inter-facial area ANSWER DOWNLOAD EXAMIANS APP
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