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.Management Sciences
Category: Chemical Reaction
Mean residence time is equal to the space time, when_________________?
A. The feed rate is measured at temperature and pressure in the reactor
B. The temperature, pressure and the density of reaction mixture remains constant throughout the
reactor
C. There is no change in number of moles in gaseous reaction
D. All A., B. and C.
There is no correspondence between stoichiometric and the rate equation in case of a/an _____________ reaction?
A. Elementary
B. Multiple
C. Autocatalytic
D. Non-elementary
For a packed bed reactor; the presence of a long tail in the residence time distribution curve is an indication of ?
A. Ideal plug flow
B. Bypass
C. Dead zone
D. Channelling
In case of a P.F.R., there__________________________?
A. May be lateral mixing of fluid
B. Should not be any mixing along the flow path
C. Both A. and B.
D. Neither A. nor B.
Rate determining step in a reaction consisting of a number of steps in series is the ______________ step?
A. Fastest
B. Slowest
C. Intermediate
D. Data insufficient; can’t be predicted
The ‘E’ curve for a non-ideal reactor defines the fraction of fluid having age between t and t + dt _____________________?
A. At the inlet
B. At the outlet
C. In the reactor
D. Averaged over the inlet and outlet
Sum of the powers of the concentration terms in the rate equation is called the _____________ of the reaction?
A. Order
B. Overall order
C. Molecularity
D. None of these
The residence time distribution of an ideal CSTR is _____________________?
A. (1/η) exp (-t/η)
B. η exp (-t/η)
C. exp (-t/η)
D. (1/η) (-t/η)
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