Chemical Reaction Engineering The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way, that the Larger reactors have more space time compared to smaller ones None of these Space time for each parallel line is same Space time for parallel lines is different Larger reactors have more space time compared to smaller ones None of these Space time for each parallel line is same Space time for parallel lines is different ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction? 3 Zero 2 1 3 Zero 2 1 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For an isothermal second order aqueous phase reaction, A → B, the ratio of the time required for 90% conversion to the time required for 45% conversion is 11 4 2 22 11 4 2 22 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
Chemical Reaction Engineering In a semi-batch reactor Velocity of reaction can be controlled Residence time is constant Maximum conversion can be controlled Both the reactants flow counter-currently Velocity of reaction can be controlled Residence time is constant Maximum conversion can be controlled Both the reactants flow counter-currently ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A space time of 3 hours for a flow reactor means that It takes three hours to dump the entire volume of the reactor with feed The time required to process one reactor volume of feed (measured at specified conditions) is 3 hours Conversion is cent per cent after three hours Three reactor volumes of feed can be processed every hour It takes three hours to dump the entire volume of the reactor with feed The time required to process one reactor volume of feed (measured at specified conditions) is 3 hours Conversion is cent per cent after three hours Three reactor volumes of feed can be processed every hour ANSWER DOWNLOAD EXAMIANS APP
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