Chemical Reaction Engineering For high conversion in a highly exothermic solid catalysed reaction, use a __________ bed reactor. Fluidised bed reactor followed by a fixed Fluidised Fixed bed reactor followed by a fluidised Fixed Fluidised bed reactor followed by a fixed Fluidised Fixed bed reactor followed by a fluidised Fixed ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A batch reactor is characterised by Variation in reactor volume Constant residence time Variation in extent of reaction and properties of the reaction mixture with time Very low conversion Variation in reactor volume Constant residence time Variation in extent of reaction and properties of the reaction mixture with time Very low conversion ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The increase in the rate of reaction with temperature is due to Decrease in activation energy Increase in the average kinetic energy of the reacting molecules Increase in the number of effective collisions None of these Decrease in activation energy Increase in the average kinetic energy of the reacting molecules Increase in the number of effective collisions None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism. Proportional to the square of Inversely proportional to Independent of Proportional to Proportional to the square of Inversely proportional to Independent of Proportional to ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For the liquid phase parallel reactions:R, rR = K?.CA2; E? = 80 KJ/moleS, rS = K?.CA ; E? = 120 KJ/mole The desired product is R. A higher selectivity of R will be achieved, if the reaction is conducted at Low temperature in a CSTR High temperature in a PFR Low temperature in a PFR High temperature in a CSTR Low temperature in a CSTR High temperature in a PFR Low temperature in a PFR High temperature in a CSTR 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)) 600 400 500 1000 600 400 500 1000 ANSWER DOWNLOAD EXAMIANS APP
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