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 External mass transfer Reaction None of these Diffusion within the pellet External mass transfer Reaction None of these Diffusion within the pellet ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If the time required to complete a definite fraction of reaction varies inversely as the concentration of the reactants, then the order of reaction is 1 2 3 1 2 3 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In case of physical adsorption, the heat of adsorption is of the order of __________ kcal/kg.mole. 100 10000 100000 1000 100 10000 100000 1000 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering An irreversible first order reaction is being carried out in a CSTR and PFR of same volume. The liquid flow rates are same. The relative conversion will Be same in both cases Be more in PFR than in CSTR Depend on the temperature Be more in CSTR than in PFR Be same in both cases Be more in PFR than in CSTR Depend on the temperature Be more in CSTR than in PFR ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In the hydrodealkylation of toluene to benzene, the following reactions occur:C₇H₈ + H₂ → C₆H₆ + CH₄2C₆H₆ ⇋ C₁₂H₁₀ + H₂Toluene and hydrogen are fed to a reactor in a molar ratio 1:5.80% of the toluene gets converted and the selectivity of benzene(defined as moles of benzene formed/moles of toluene converted) is 90%. The fractional conversion of hydrogen is 0.152 0.16 0.144 0.136 0.152 0.16 0.144 0.136 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The conversion XA and residence time data are collected for zero order liquid phase reaction in a stirred tank reactor. Which of the following will be a straight line? XA(1 - XA)Vs τ XA Vs . τ XA Vs ln τ XA/(1 - XA)Vs τ XA(1 - XA)Vs τ XA Vs . τ XA Vs ln τ XA/(1 - XA)Vs τ ANSWER DOWNLOAD EXAMIANS APP
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