Chemical Reaction Engineering The importance of diffusion in a catalyst are increased by An active surface of the catalyst Large catalyst particle size All of these Small pore diameter An active surface of the catalyst Large catalyst particle size All of these Small pore diameter ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Slurry reactors are characterised by the Neither A nor B Presence of two mobile phases Both A and B Lack of intraparticle diffusion resistance Neither A nor B Presence of two mobile phases Both A and B Lack of intraparticle diffusion resistance ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering __________ explains the mechanism of catalysis. Thermodynamics Collision theory Activated complex theory None of these Thermodynamics Collision theory Activated complex theory None of these 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)) 1000 400 600 500 1000 400 600 500 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the Value of threshold energy decreases Collision frequency increases Increased temperature reduces the activation energy Fraction of molecules having threshold energy increases Value of threshold energy decreases Collision frequency increases Increased temperature reduces the activation energy Fraction of molecules having threshold energy increases ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate of reaction of a/an __________ reaction is not affected by temperature rise. Zero order Photochemical Autocatalytic Consecutive Zero order Photochemical Autocatalytic Consecutive ANSWER DOWNLOAD EXAMIANS APP
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