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Chemical Engineering - Chemical Reaction Engineering

Exercise : Chemical Reaction Engineering - Section 6
46.
A catalyst promoter
improves the activity of a catalyst.
acts as a catalyst support.
itself has very high activity.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
In case of a P.F.R., there
may be lateral mixing of fluid.
should not be any mixing along the flow path.
both (a) and (b).
neither (a) nor (b).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
For the non-catalytic reaction of particles with surrounding fluid, the time needed to achieve the same fractional conversion for particles of different but unchanging sizes is proportional to the square of particle diameter, when the __________ is the controlling resistance.
film diffusion
diffusion through ash layer
chemical reaction
either (a), (b) or (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
If ΔG (free energy change) for a chemical reaction is very large and negative, then the reaction is
not feasible.
just feasible.
very much feasible.
unpredictable as ΔG is no measure of feasibility of a reaction.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
In a zero order reaction, reactants concentration does not change with time and the
time for half change is half the time taken for completion of the reaction.
time for half change is independent of the initial concentration.
time for completion of the reaction is independent of the initial concentration.
reaction rate is trebled when the initial concentration is trebled.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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