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.Management Sciences
Category: Chemical Reaction
A reactor is generally termed as an autoclave, when it is a_____________________?
A. High pressure batch reactor
B. Atmospheric pressure tank reactor
C. High pressure tubular reactor
D. Atmospheric pressure CSTR
Cold shot cooling is only practical when the feed temperature is ______________ than the reaction temperature?
A. Higher
B. Much higher
C. Lower
D. Much lower
The exit age distribution curve E(t) for an ideal CSTR with the average residence time, η, is given by__________________?
A. e-t/η
B. e-t/η/η
C. 1 – e-t/η
D. 1 – (e-t/η/η)
The half life period ‘t’ of a zero order reaction as shown in the bellow figure, is equal to_________________?
A. CA0/2K
B. CA0/K
C. 0.693/K
D. 1/K
Pick out the wrong statement ?
A. Visible radiation provides the necessary activation energy in photochemical reactions
B. The order and molecularity of a complex reaction may not be the same
C. For a second order reaction, the slope of the graph/plot between rate and (concentration) is
equal to the rate constant (k)
D. Molecularity of the reaction is always a whole number greater than zero
The performance of a cascade of CSTR’s can be improved by adding__________________?
A. A P.F. reactor in series
B. A P.F. reactor in parallel
C. More CSTR’s in series
D. More CSTR’s in parallel
Which of the following is the optimum operating condition for an exothermic reversible reaction taking place in a plug-flow reactor ?
A. Temperature should be high in the beginning and decreased towards the end of the reaction
B. Very low temperature should be used throughout the reaction
C. Very high temperature should be used throughout the reaction
D. None of these
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