Chemical Reaction Engineering Exothermic reactions are best carried out in CSTR followed by a plug flow reactor CSTR in series A CSTR A plug flow reactor followed by CSTR CSTR followed by a plug flow reactor CSTR in series A CSTR A plug flow reactor followed by CSTR 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 ΔHA + ΔHR E + ΔHA - ΔHR E E + ΔHA ΔHA + ΔHR E + ΔHA - ΔHR E ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Exposure of a photographic plate to produce a latent image is an example of __________ reaction. Very slow Both B and C Very fast Photochemical Very slow Both B and C Very fast Photochemical ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst Porosity is of less importance Porosity is very important Internal surface area is utilised efficiently None of these Porosity is of less importance Porosity is very important Internal surface area is utilised efficiently None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A catalyst in a chemical reaction __________ free energy change in the reaction. Increases Either A or B; depends on the type of catalyst Decreases Neither A nor B Increases Either A or B; depends on the type of catalyst Decreases Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering BET apparatus is used to determine the Specific surface of a porous catalyst Pore size distribution Pore diameter Porosity of the catalyst bed Specific surface of a porous catalyst Pore size distribution Pore diameter Porosity of the catalyst bed ANSWER DOWNLOAD EXAMIANS APP
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