Chemical Reaction Engineering Effectiveness factor of a catalyst pellet is a measure of the __________ resistance. Pore diffusion Chemical reaction Gas film None of these Pore diffusion Chemical reaction Gas film None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following is the optimum operating condition for an exothermic reversible reaction taking place in a plug-flow reactor? Very high temperature should be used throughout the reaction None of these Temperature should be high in the beginning and decreased towards the end of the reaction Very low temperature should be used throughout the reaction Very high temperature should be used throughout the reaction None of these Temperature should be high in the beginning and decreased towards the end of the reaction Very low temperature should be used throughout the reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Organic catalysts differ from the inorganic catalyst in the sense that the former is Active at very high temperature only Prohibitively costly Proteinous in nature Active at cryogenic temperatures only Active at very high temperature only Prohibitively costly Proteinous in nature Active at cryogenic temperatures only ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A batch reactor is Suitable for gas-phase reactions on commercial scale Most suitable for very large production rate Least expensive to operate for a given rate Suitable for liquid phase reactions involving small production rate Suitable for gas-phase reactions on commercial scale Most suitable for very large production rate Least expensive to operate for a given rate Suitable for liquid phase reactions involving small production rate ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A plug-flow reactor is characterised by Presence of axial mixing Presence of lateral mixing Constant composition and temperature of reaction mixture High capacity Presence of axial mixing Presence of lateral mixing Constant composition and temperature of reaction mixture High capacity 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 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 7R/8 does not participate in reaction 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 7R/8 does not participate in reaction ANSWER DOWNLOAD EXAMIANS APP
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