Chemical Reaction Engineering Design of heterogeous catalytic reactor involves consideration of __________ steps. Both A & B Neither A nor B Only physical Only chemical Both A & B Neither A nor B Only physical Only chemical ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The concentration of A in a first order reaction, A → B, decreases Logarithmically with time Exponentially with time Very abruptly towards the end of the reaction Linearly with time Logarithmically with time Exponentially with time Very abruptly towards the end of the reaction Linearly with time 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." Ffectiveness factor for a zero order reaction can not be 7/8 as it must always be 1 Inner catalyst core of radius R/2 does not participate in reaction Inner catalyst core of radius R/8 does not participate in reaction Inner catalyst core of radius 7R/8 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 R/2 does not participate in reaction Inner catalyst core of radius R/8 does not participate in reaction Inner catalyst core of radius 7R/8 does not participate in reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following will give maximum gas conversion? Plug-flow catalytic reactor Semi-fluidised bed reactor Fixed bed reactor Fluidised bed reactor Plug-flow catalytic reactor Semi-fluidised bed reactor Fixed bed reactor Fluidised bed reactor ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Bulk diffusion in catalyst pore __________ with increase in pressure. Decreases Increases Increases exponentially Remains unchanged Decreases Increases Increases exponentially Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate of a chemical reaction is almost doubled for every 10°C rise in temperature. The rate will increase __________ times, if the temperature rises form 10 to 100°C. 112 612 256 512 112 612 256 512 ANSWER DOWNLOAD EXAMIANS APP
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