Chemical Reaction Engineering Which one is the rate controlling step in a solid-gas non-catalytic reaction occurring at very high temperature? Ash layer diffusion Pore diffusion Film diffusion Chemical reaction Ash layer diffusion Pore diffusion Film diffusion Chemical reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Carrier in a catalyst increases its Activity Performance Surface area None of these Activity Performance Surface area None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Sum of the powers of the concentration terms in the rate equation is called the __________ of the reaction. Order Molecularity None of these Overall order Order Molecularity None of these Overall order ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following curves shows the effect of temperature on the extent of gas-solid adsorption at a given pressure? Langmuir adsorption isotherm None of these Adsorption isobar Freundlich adsorption isotherm Langmuir adsorption isotherm None of these Adsorption isobar Freundlich adsorption isotherm ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The reaction A → B is conducted in an adiabatic plug flow reactor (PFR). Pure A at a concentration of 2 kmol/m³ is fed to the reactor at the rate of 0.01 m³ /s and at a temperature of 500 K. If the exit conversion is 20%, then the exit temperature (in k)is (Data: Heat of reaction at 298 K = - 50000 kJ/ kmole of A reacted Heat capacities CPA = CPB = 100kJ/kmole. K (may be assumed to be independent of temperature)) 600 500 400 1000 600 500 400 1000 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A catalyst in a chemical reaction All of these Alters the reaction mechanism Decreases the activation energy Increases the frequency of collisions of reacting species All of these Alters the reaction mechanism Decreases the activation energy Increases the frequency of collisions of reacting species ANSWER DOWNLOAD EXAMIANS APP
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