Chemical Reaction Engineering A chemical reaction is of zero order, when the reaction rate is (where, CA = concentration of reactant) Independent of temperature ∝ 1/CA None of these ∝ CA Independent of temperature ∝ 1/CA None of these ∝ CA ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst None of these Internal surface area is utilised efficiently Porosity is very important Porosity is of less importance None of these Internal surface area is utilised efficiently Porosity is very important Porosity is of less importance ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In an exothermic chemical reaction, the reactants compared to the products have More energy Higher temperature Less energy Same energy More energy Higher temperature Less energy Same energy ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A batch reactor is characterised by Variation in extent of reaction and properties of the reaction mixture with time Constant residence time Variation in reactor volume Very low conversion Variation in extent of reaction and properties of the reaction mixture with time Constant residence time Variation in reactor volume Very low conversion ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For the non-catalytic reaction of particles with surrounding fluid, the time needed to achieve the same fractional conversion for particles of different but unchanging sizes is proportional to the square of particle diameter, when the __________ is the controlling resistance. Diffusion through ash layer Chemical reaction Either A, B or C Film diffusion Diffusion through ash layer Chemical reaction Either A, B or C Film diffusion ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A catalyst loses its activity due to Loss in surface area of the active component Agglomeration of metal particles caused by thermal sintering of the solid surface Covering of the catalytic active sites by a foregin substance All of these Loss in surface area of the active component Agglomeration of metal particles caused by thermal sintering of the solid surface Covering of the catalytic active sites by a foregin substance All of these ANSWER DOWNLOAD EXAMIANS APP
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