Chemical Reaction Engineering A catalyst in a chemical reaction Alters the reaction mechanism Increases the frequency of collisions of reacting species All of these Decreases the activation energy Alters the reaction mechanism Increases the frequency of collisions of reacting species All of these Decreases the activation energy ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Vegetable oils are hydrogenated in a __________ reactor. Homogeneous catalytic Slurry None of these Plug flow Homogeneous catalytic Slurry None of these Plug flow 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)) 500 400 1000 600 500 400 1000 600 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Organic catalysts differ from the inorganic catalyst in the sense that the former is Active at very high temperature only Proteinous in nature Active at cryogenic temperatures only Prohibitively costly Active at very high temperature only Proteinous in nature Active at cryogenic temperatures only Prohibitively costly ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A high space velocity means that a given None of these Conversion can be obtained with a high feed rate Both A and B Reaction can be accomplished with small reactor None of these Conversion can be obtained with a high feed rate Both A and B Reaction can be accomplished with small reactor ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If the pore diffusion controls in a catalytic reaction, the apparent activation energy Ea is equal to The intrinsic activation energy E (E + ED) where ED is activation due to diffusion (E + ED)/2 ED/2 The intrinsic activation energy E (E + ED) where ED is activation due to diffusion (E + ED)/2 ED/2 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS