Chemical Engineering - Chemical Reaction Engineering

16. 

For a vapour phase catalytic reaction (A + B P) which follows the Ridel mechanism and the reaction step is rate controlling, the rate of reaction is given by (reaction rate is irreversible, product also absorbs).

A.
B.
C.
D.

Answer: Option A

Explanation:

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17. 

If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the __________ diffusion.

A. film
B. ash layer
C. pore
D. none of these

Answer: Option A

Explanation:

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18. 

The units of frequency factor in Arhenious equation

A. are the same as those of the rate constant.
B. depend on the order of the reaction.
C. depend on temperature, pressure etc. of the reaction.
D. are cycles per unit time.

Answer: Option A

Explanation:

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19. 

Which of the following is not a chemical step in a fluid solid catalytic reaction ?

A. Surface chemical reaction
B. Adsorption
C. Desorption
D. None of these

Answer: Option D

Explanation:

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20. 

For a series of reactions having k1 << k2, the reaction system can be approximated as

A.
B.
C.
D.

Answer: Option D

Explanation:

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