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.Management Sciences
Category: Chemical Reaction
The first order gas phase reaction as shown in the bellow figure is conducted isothermally in batch mode. The rate of change of conversion with time is given by________________?
A. dXA/dt = k1 (1 – XA)2 (1 + 2XA)
B. dXA/dt = k1 (1 – XA) (1 + 0.5XA)
C. dXA/dt = k1 (1 – XA)
D. dXA/dt = k1 (1 – XA)/(1 + XA)
The experimentally determined overall order of the reaction, A + B → C + D, is two. Then the__________________?
A. Reaction is elementary with a molecularity of 2
B. Molecularity of the reaction is 2, but the reaction may not be elementary
C. Reaction may be elementary with molecularity of 2
D. Reaction is elementary but the molecularity may not be 2
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
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