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.Management Sciences
Category: Chemical Reaction
The increase in the rate of reaction with temperature is due to__________________?
A. Increase in the number of effective collisions
B. Decrease in activation energy
C. Increase in the average kinetic energy of the reacting molecules
D. None of these
For an ideal mixed flow reactor (CSTR), the exit age distribution E(t) is given by __________________?
A. A Dirac delta function
B. A step function
C. A ramp function
D. None of the above
The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way, that the_________________?
A. Space time for each parallel line is same
B. Space time for parallel lines is different
C. Larger reactors have more space time compared to smaller ones
D. None of these
The equilibrium constant for the reversible reaction as shown in the bellow figure, is affected by the__________________?
A. Temperature of the system
B. Presence or absence of inerts
C. Pressure of the system
D. Kinetics of the reaction
In a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled, then the equilibrium constant will________________?
A. Remain the same
B. Be halved
C. Also be doubled
D. Become one fourth
The rate constant of a chemical reaction decreases by decreasing the____________________?
A. Pressure
B. Concentration of reactants
C. Temperature
D. Duration of reaction
In case of a _____________ reactor, the composition in the reactor and at the exit of the reactor is the same ?
A. Semi-batch
B. Tubular
C. Batch
D. Back-mix
Concentration of the limiting reactant (with initial concentration of a moles/litre) after time t is (a-x). Then ‘t’ for a first order reaction is given by____________________?
A. k. t = ln a/(a – x)
B. k. t = x/a (a – x)
C. k. t = ln (a – x)/a
D. k. t = ln a (a – x)/x
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