Chemical Engineering - Chemical Reaction Engineering

26. 

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

Answer: Option B

Explanation:

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27. 

To maximise the formation of R in the simultaneous reaction
A + B R , rR = 2CA0.5.CB2
A + B S , rS = 1.5 CA . CB
We should have

A. low CA, low CB
B. low CA, high CB
C. high CA, low CB
D. high CA, high CB

Answer: Option B

Explanation:

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28. 

A reaction which is catalysed by an acid is also catalysed by any substance, which has a tendency to

A. lose a proton.
B. gain a proton.
C. lose an electron
D. none of these.

Answer: Option A

Explanation:

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29. 

A stirred tank reactor compared to tubular-flow reactor provides

A. more uniform operating conditions.
B. permits operation at the optimum temperature for a long reaction time.
C. higher overall selectivity for a first order consecutive reaction.
D. all (a), (b) and (c)

Answer: Option D

Explanation:

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30. 

A chemical reaction, A 3B, is conducted in a constant pressure vessel. Starting with pure A, the volume of the reaction mixture increases 3 times in 6 minutes. The fractional conversion is

A. 0.33
B. 0.5
C. 1
D. data insufficient, can't be predicted

Answer: Option C

Explanation:

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