Chemical Reaction Engineering A catalyst in a chemical reaction Alters the reaction mechanism Increases the frequency of collisions of reacting species Decreases the activation energy All of these Alters the reaction mechanism Increases the frequency of collisions of reacting species Decreases the activation energy All of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If helium is introduced in a reactor containing O₂, SO₂ and SO₃ at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO₃ (as per Le Chatlier principle) Remains unaltered Decreases Increases Changes unpredictably Remains unaltered Decreases Increases Changes unpredictably ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Chemical kinetics can predict the __________ of a chemical reaction. Rate Both A & B Feasibility Neither A nor B Rate Both A & B Feasibility Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The ratio of moles of a reactant converted into the desired product to that converted into unwanted product is called Selectivity Operational yield None of these Relative yield Selectivity Operational yield None of these Relative yield 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 500 400 600 1000 500 400 600 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The exit age distribution curve E(t) for an ideal CSTR with the average residence time, τ, is given by 1 - (e-t/τ/T) 1 - e-t/τ E-t/τ/T E-t/τ 1 - (e-t/τ/T) 1 - e-t/τ E-t/τ/T E-t/τ ANSWER DOWNLOAD EXAMIANS APP
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