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 None of these External mass transfer Reaction Diffusion within the pellet None of these External mass transfer Reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Catalytic action in a catalytic chemical reaction follows from the ability of catalyst to change the Equilibrium constant Activation energy None of these Heat of reaction Equilibrium constant Activation energy None of these Heat of reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In case of a __________ reactor, the composition in the reactor and at the exit of the reactor is the same. Back-mix Semi-batch Batch Tubular Back-mix Semi-batch Batch Tubular ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process'. The diffusivity under this condition is called 'Knudsen diffusivity', which is affected by the Both A & B Temperature Pressure Neither A nor B Both A & B Temperature Pressure Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate constant of a chemical reaction increases by 100 times when the temperature is increased from 400 °K to 500 °K. Assuming transition state theory is valid, the value of E/R is 9210°K 8764°K 8621°K 8987°K 9210°K 8764°K 8621°K 8987°K ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering As the chemical reaction proceeds, the rate of reaction Increases Decreases Remains same May increase or decrease depending on the type of reaction Increases Decreases Remains same May increase or decrease depending on the type of reaction ANSWER DOWNLOAD EXAMIANS APP
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