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.Management Sciences
Category: Chemical Reaction
Fractional conversion _________________ for an exothermic reversible chemical reaction, when the temperature is maximum?
A. Increases
B. Remains unchanged
C. Decreases
D. Unpredictable from the data
According to Arrhenius equation of temperature dependency of rate constant for an elementary reaction _________________?
A. k ∝ √T
B. k ∝ e-E/RT
C. k ∝ T e-E/RT
D. None of these
Pick out the wrong statement ?
A. Chemical reactions with high activation energy are very temperature sensitive
B. A flat velocity profile exists in a plug flow reactor
C. The residence time for all the elements of fluid in case of a P.F.R. need not be same
D. Half life of a reaction increases with increased initial concentration for reaction orders more
than one
For a mixed flow reactor operating at steady state, the rate of reaction is given by______________?
A. (FA0/V) – (dCA/dt)
B. (FA0/V) + (dCA/dt)
C. (FA0/V) XA
D. -(dCA/dt)
A back mix reactor is___________________?
A. Suitable for gas phase reactions
B. Ideal at very low conversion
C. Same as plug flow reactor (PFR)
D. Same as ideal stirred tank reactor
For series reaction, the relative yield__________________?
A. Is always greater for plug-flow reactor than for the single CSTR of the same volume
B. Statement in A. is wrong
C. Decreases with increasing conversion
D. Both A. and C. hold good
The extent of a reaction is ___________________?
A. Different for reactants and products
B. Dimensionless
C. Depends on the stoichiometric co-efficient
D. All of the above
In which of the following reactions, the equilibrium will shift to the right, if the total pressure is increased ?
A. H2 + Cl2 ⇌ 2HCl
B. N2 + O2 ⇌ 2NO
C. N2O4 ⇌ 2 NO2
D. H2 + I2 ⇌ 2HI
A first order irreversible reaction, A → B is carried out separately in a constant volume as well as in a variable volume reactor for a particular period. It signifies that _____________ in the two reactors?
A. Both conversion as well as concentration are same
B. Conversion in both will be the same but concentrations will be different
C. Both the conversion as well as concentrations will be different
D. None of these
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