Chemical Reaction Engineering Bulk diffusion in catalyst pore __________ with increase in pressure. Increases Remains unchanged Decreases Increases exponentially Increases Remains unchanged Decreases Increases exponentially ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following resistances is not involved in a gas phase catalytic (gas- solid) reaction? Ash resistance Gas film and pore surface diffusion resistances for reactants Gas film and pore surface diffusion resistances for products Surface phenomenon resistance Ash resistance Gas film and pore surface diffusion resistances for reactants Gas film and pore surface diffusion resistances for products Surface phenomenon resistance ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ? Data insufficient, can Large reactor followed by smaller one Smaller reactor followed by larger one Either of the arrangement A or B will give the same yield Data insufficient, can Large reactor followed by smaller one Smaller reactor followed by larger one Either of the arrangement A or B will give the same yield ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following will give maximum gas conversion? Plug-flow catalytic reactor Semi-fluidised bed reactor Fluidised bed reactor Fixed bed reactor Plug-flow catalytic reactor Semi-fluidised bed reactor Fluidised bed reactor Fixed bed reactor ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering BET apparatus Is made entirely of stainless steel Operates at very high pressure None of these Measures the catalyst surface area directly Is made entirely of stainless steel Operates at very high pressure None of these Measures the catalyst surface area directly 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 R/8 does not participate in reaction Inner catalyst core of radius R/2 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/8 does not participate in reaction Inner catalyst core of radius R/2 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 ANSWER DOWNLOAD EXAMIANS APP
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