Chemical Reaction Engineering In a reaction, the threshold energy is equal to (where, A = activation energy N = normal energy of reactants) A N A+N A-N A N A+N A-N ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following is an independent variable for a batch tank reactor with uniform concentration and temperature? None of these Diameter of the reactor Useful volume of the tank Time None of these Diameter of the reactor Useful volume of the tank Time ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Velocity of a chemical reaction Decreases with increase of reactant concentration Increases with increase of pressure of reactants for all reactions None of these Decreases with increase in temperature Decreases with increase of reactant concentration Increases with increase of pressure of reactants for all reactions None of these Decreases with increase in temperature 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 For the non-catalytic reaction of particles with surrounding fluid, the time needed to achieve the same fractional conversion for particles of different but unchanging sizes is proportional to the square of particle diameter, when the __________ is the controlling resistance. Diffusion through ash layer Film diffusion Either A, B or C Chemical reaction Diffusion through ash layer Film diffusion Either A, B or C Chemical reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering According to Arhenious equation of temperature dependency of rate constant for an elementary reaction K ∝ e-E/RT K ∝ √T K ∝ T e-E/RT None of these K ∝ e-E/RT K ∝ √T K ∝ T e-E/RT None of these ANSWER DOWNLOAD EXAMIANS APP
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