Chemical Reaction Engineering A stirred tank reactor compared to tubular-flow reactor provides More uniform operating conditions Permits operation at the optimum temperature for a long reaction time All of these Higher overall selectivity for a first order consecutive reaction More uniform operating conditions Permits operation at the optimum temperature for a long reaction time All of these Higher overall selectivity for a first order consecutive reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The conversion of a reactant, undergoing a first order reaction, at a time equal to three times the half life of the reaction is 0.425 0.875 Data insufficient to calculate 0.5 0.425 0.875 Data insufficient to calculate 0.5 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The minimum energy required to allow a chemical reaction to proceed is termed as the 'threshold energy '. Chemical reaction with low activation energy are Insensitive to temperature changes Highly temperature sensitive Mostly irreversible Always irreversible Insensitive to temperature changes Highly temperature sensitive Mostly irreversible Always irreversible 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 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 Inner catalyst core of radius R/8 does not participate in reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The performance equations for constant density systems are identical for P.F.R, batch reactor and backmix reactor P.F.R. and backmix reactor P.F.R. and batch reactor Batch reactor and backmix reactor P.F.R, batch reactor and backmix reactor P.F.R. and backmix reactor P.F.R. and batch reactor Batch reactor and backmix reactor ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In case of the irreversible unimolecular type, first order reaction, the fractional conversion at any time for constant volume system as compared to variable volume system is Less Either A or B, depends on other factors More Same Less Either A or B, depends on other factors More Same ANSWER DOWNLOAD EXAMIANS APP
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