Chemical Reaction Engineering For high conversion in a highly exothermic solid catalysed reaction, use a __________ bed reactor. Fluidised bed reactor followed by a fixed Fixed bed reactor followed by a fluidised Fixed Fluidised Fluidised bed reactor followed by a fixed Fixed bed reactor followed by a fluidised Fixed Fluidised ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A pulse tracer is introduced in an ideal CSTR (with a mean residence time ι) at time, t = 0. The time taken for the exit concentration of the tracer to reach half of its initial value will be τ/0.693 0.5τ 0.693τ 2τ τ/0.693 0.5τ 0.693τ 2τ ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the __________ diffusion. None of these Film Ash layer Pore None of these Film Ash layer Pore ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering An isothermal irreversible reaction is being carried out in an ideal tubular flow reactor. The conversion in this case will __________ with decrease in space time. Increase exponentially Increase Decrease Remain unchanged Increase exponentially Increase Decrease Remain unchanged ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The sequence in which three CSTR's of volumes 5, 10 and 15 m³ will be connected in series to obtain the maximum production in a second order irreversible reaction is 15, 10, 5 5, 10, 15 10, 15, 5 10, 5, 15 15, 10, 5 5, 10, 15 10, 15, 5 10, 5, 15 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Pick the WRONG design guideline for a reactor in which the reactions, A → R (desired) and A → S (undesired) are to take place. The ratio of the reaction rates is rR/rS = (k₁/k₂).Csub>Aa-b Use batch reactor or plug flow reactor, when a > b Avoid recycle, when a > b Use CSTR with a high conversion, when a > b Use high pressure and eliminate inerts, when a > b Use batch reactor or plug flow reactor, when a > b Avoid recycle, when a > b Use CSTR with a high conversion, when a > b Use high pressure and eliminate inerts, when a > b ANSWER DOWNLOAD EXAMIANS APP
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