Chemical Reaction Engineering Which one is the rate controlling step in a solid-gas non-catalytic reaction occurring at very high temperature? Film diffusion Pore diffusion Chemical reaction Ash layer diffusion Film diffusion Pore diffusion Chemical reaction Ash layer diffusion ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering What is the value of 'n' if the reaction rate of the chemical reaction A → B, is proportional to CAn and it is found that the reaction rate triples, when the concentration of 'A' is increased 9 times ? 1/2 1/9 1/3 3 1/2 1/9 1/3 3 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In a reaction, the threshold energy is equal to (where, A = activation energy N = normal energy of reactants) A-N A N A+N A-N A N A+N ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For identical flow rate and feed composition, X plug flow reactors (PER) in series with a total volume V gives the same conversion as single CSTR of volume V PFR of volume V PFR of volume V/X CSTR of volume V/X CSTR of volume V PFR of volume V PFR of volume V/X CSTR of volume V/X ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For reactions in parallel viz A → P (desired product) and A → Q (unwanted product), if the order of the desired reaction is higher than that of the undesired reaction, a Both A and B Tubular reactor is preferred over a single CSTR for high yield Single CSTR is the most suitable Batch reactor is preferred over a single CSTR for high yield Both A and B Tubular reactor is preferred over a single CSTR for high yield Single CSTR is the most suitable Batch reactor is preferred over a single CSTR for high yield ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Catalyst carriers Have very high selectivity Provide large surface area with a small amount of active material Increase the activity of a catalyst Inhibit catalyst poisoning Have very high selectivity Provide large surface area with a small amount of active material Increase the activity of a catalyst Inhibit catalyst poisoning ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS