Chemical Engineering - Chemical Reaction Engineering

31. 

The rate constant of a reaction is a function of the

A. time of reaction.
B. temperature of the system.
C. extent of reaction.
D. initial concentration of the reactants.

Answer: Option B

Explanation:

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32. 

Mean residence time is equal to the space time, when

A. the feed rate is measured at temperature and pressure in the reactor.
B. the temperature, pressure and the density of reaction mixture remains constant throughout the reactor.
C. there is no change in number of moles in gaseous reaction.
D. all (a), (b) and (c).

Answer: Option D

Explanation:

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33. 

If 'n' is the order of reaction, then unit of rate constant is

A. 1/(time)(concentration)n - 1
B. (time)-1 (concentration)n - 1
C. (time)n - 1 (concentration)
D. none of these

Answer: Option A

Explanation:

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34. 

Batch process is preferred over continuous process, when the

A. product yields and quality can not be achieved in continuous process, because of long residence time.
B. sales demand of product is not steady.
C. same equipment can not be used for several processes of the same nature.
D. all (a), (b) & (c)

Answer: Option D

Explanation:

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35. 

The value of 'n' for a chemical reaction A B, whose reaction rate is CAn, will be __________ if the rate of the reaction increases by a factor of 8, when the concentration of is doubled.

A. 0
B. 1
C. 2
D. 3

Answer: Option D

Explanation:

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