Chemical Reaction Engineering If the pore diffusion controls in a catalytic reaction, the apparent activation energy Ea is equal to The intrinsic activation energy E ED/2 (E + ED) where ED is activation due to diffusion (E + ED)/2 The intrinsic activation energy E ED/2 (E + ED) where ED is activation due to diffusion (E + ED)/2 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The ratio of volume of mixed reactor to the volume of P.F.R. (for identical flow rate, feed composition and conversion) for zero order reaction is ∞ > 1 1 ∞ > 1 1 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Arhenious equation shows the variation of __________ with temperature. Rate constant Frequency factor Energy of activation Reaction rate Rate constant Frequency factor Energy of activation Reaction rate ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For nearly isothermal operation involving large reaction time in a liquid-phase reaction, the most suitable reactor is a __________ reactor. Stirred tank Tubular flow Fixed bed Batch Stirred tank Tubular flow Fixed bed Batch ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The reason why a catalyst increases the rate of reaction is that, it None of these Increases the activation energy Decreases the molecular collision diameter Decreases the energy barrier for reaction None of these Increases the activation energy Decreases the molecular collision diameter Decreases the energy barrier for reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In case of calcination of limestone, CaCO₃ CaO + CO₂, the addition of more of CaO will result in __________ in the concentration of CO₂. Unpredictable from the data Decrease No change Increase Unpredictable from the data Decrease No change Increase ANSWER DOWNLOAD EXAMIANS APP
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