Chemical Engineering - Chemical Reaction Engineering

46. 

The catalyst in a second order reversible reaction increases the rate of the forward reaction

A. and decreases that of backward reaction.
B. and backward reaction equally.
C. only.
D. to a greater extent than that of the backward reaction.

Answer: Option B

Explanation:

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47. 

Catalyst carriers

A. have very high selectivity.
B. increase the activity of a catalyst.
C. provide large surface area with a small amount of active material.
D. inhibit catalyst poisoning.

Answer: Option C

Explanation:

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48. 

For the liquid phase zero order irreversible reaction A B, the conversion of A in a CSTR is found to be 0.3 at a space velocity of 0.1min-1 . What will be the conversion for a PFR with a space velocity of 0.2 min-1? Assume that all the other operating conditions are the same for CSTR and PFR.

A. 0.15
B. 0.30
C. 0.60
D. 0.90

Answer: Option C

Explanation:

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49. 

A high space velocity means that a given

A. reaction can be accomplished with small reactor.
B. conversion can be obtained with a high feed rate.
C. both (a) and (b).
D. none of these.

Answer: Option C

Explanation:

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50. 

In flow reactors, the performance equations interrelate the rate of reaction to the

A. feed rate.
B. reactor volume,
C. extent of reaction.
D. all (a), (b) and (c).

Answer: Option D

Explanation:

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