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 Diffusion within the pellet External mass transfer None of these Reaction Diffusion within the pellet External mass transfer None of these Reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering An isothermal aqueous phase reversible reaction, P ⇋ R, is to be carried out in a mixed flow reactor. The reaction rate in k.mole/m³ .h is given by, r = 0.5CP - 0.125CR. A stream containing only P enters the 1.60 2.67 0.80 1.33 1.60 2.67 0.80 1.33 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 0.136 0.144 0.152 0.16 0.136 0.144 0.152 0.16 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For an ideal mixed flow reactor (CSTR), the exit age distribution E(t) is given by A step function A dirac delta function A ramp function None of these A step function A dirac delta function A ramp function None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If ΔG (free energy change) for a chemical reaction is very large and negative, then the reaction is Not feasible Just feasible Unpredictable as ΔG is no measure of feasibility of a reaction Very much feasible Not feasible Just feasible Unpredictable as ΔG is no measure of feasibility of a reaction Very much feasible ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In a/an __________ vessel, the fluid enters and leaves following plug flow. Close-opened Open Open-closed Closed Close-opened Open Open-closed Closed ANSWER DOWNLOAD EXAMIANS APP
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