Chemical Reaction Engineering A first order reaction A → B occurs in an isothermal porous catalyst pellet of spherical shape. If the concentration of A at the centre of the pellet is much less than at the external surface, the process is limited by Reaction Diffusion within the pellet None of these External mass transfer Reaction Diffusion within the pellet None of these External mass transfer ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The heat of reaction Is independent of the mechanism of reaction Depends on both pressure and mechanism of reaction Depends on the pressure only Depends on the mechanism of reaction only Is independent of the mechanism of reaction Depends on both pressure and mechanism of reaction Depends on the pressure only Depends on the mechanism of reaction only 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 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 Inner catalyst core of radius 7R/8 does not participate in reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Given, 3H₂ + CO = CH₄ + H₂O, KP = 101.84 and, 4H₂ + CO₂ = CH₄ + 2H₂O, KP = 101.17the KP for the reaction CO + H₂O = CO₂ + H₂ is 103.01 10-3.01 L00.67 10-0.67 103.01 10-3.01 L00.67 10-0.67 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Arrhenious equation represents graphically the variation between the __________ and temperature. Frequency factor Rate constant Activation energy Rate of reaction Frequency factor Rate constant Activation energy Rate of reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following factors control the deactivation of a porous catalyst pellet? Decay reactions Pore diffusion Form of surface attack by poison All of these Decay reactions Pore diffusion Form of surface attack by poison All of these ANSWER DOWNLOAD EXAMIANS APP
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