Chemical Reaction Engineering The rate of reaction does not decrease appreciably as the reaction proceeds in case of __________ reactions. Autocatalytic Autothermal Endothermic Exothermic Autocatalytic Autothermal Endothermic Exothermic ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The catalytic activity of enzymes is due to their capacity to lower the __________ energy. Activation Kinetic Potential None of these Activation Kinetic Potential None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering "A spherical porous catalyst particle of radius R is subjected to reactant A which reacts to form B by a zero order surface reaction A → B. Film mass transfer resistance is negligible and pore diffusion of A is rate controlling. The effectiveness factor of the catalyst is reported as 7/8. Which of the following statement is true?A. Inner catalyst core of radius R/8 does not participate in reaction." Inner catalyst core of radius 7R/8 does not participate in reaction Inner catalyst core of radius R/8 does not participate in reaction Inner catalyst core of radius R/2 does not participate in reaction Ffectiveness factor for a zero order reaction can not be 7/8 as it must always be 1 Inner catalyst core of radius 7R/8 does not participate in reaction Inner catalyst core of radius R/8 does not participate in reaction Inner catalyst core of radius R/2 does not participate in reaction Ffectiveness factor for a zero order reaction can not be 7/8 as it must always be 1 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following factors control the design of a fluid-solid reactor? Size distribution of solids beingtreated Reaction kinetics for single particle, Flow patterns of solids and fluid in the reactor All of these Size distribution of solids beingtreated Reaction kinetics for single particle, Flow patterns of solids and fluid in the reactor All of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A batch adiabatic reactor at an initial temperature of 373°K is being used for the reaction, A → B. Assume the heat of reaction is - 1kJ/mole at 373°K and heat capacity of both A and B to be constant and equal to 50J/mole.K. The temperature rise after a conversion of 0.5 will be 5°C 20°C 10°C 100°C 5°C 20°C 10°C 100°C ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Non-catalytic fluid-solid reactions are represented by __________ model. Unreacted core Neither A and B Both A and B Continuous reaction Unreacted core Neither A and B Both A and B Continuous reaction ANSWER DOWNLOAD EXAMIANS APP
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