Chemical Engineering - Chemical Reaction Engineering

6. 

For identical flow rate and feed composition, X plug flow reactors (PER) in series with a total volume V gives the same conversion as single

A. CSTR of volume V
B. PFR of volume V
C. CSTR of volume V/X
D. PFR of volume V/X

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

7. 

Time required for 50% decomposition of a liquid in an isothermal batch reactor following first order kinetics is 2 minutes. The time required for 75% decomposition will be about __________ minutes.

A. 3
B. 4
C. 6
D. 8

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

8. 

For a __________ order reaction, the units of rate constant and rate of reaction are the same.

A. zero
B. first
C. second
D. fractional

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

9. 

In case of staged packed bed reactors carrying out exothermic reaction, use

A. high recycle for pure gas.
B. plug flow for dilute liquid requiring no large preheating of feed.
C. cold shot operations for a dilute solution requiring large preheating to bring the stream upto the reaction temperature.
D. all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

10. 

Vegetable oils are hydrogenated in a __________ reactor.

A. slurry
B. plug flow
C. homogeneous catalytic
D. none of these

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.