Chemical Engineering - Chemical Reaction Engineering

31. 

During manufacture of H2SO4, the oxidation of SO2 to SO3 by oxygen is an en-dothermic reaction. The yield of SO3 will be maximised, if the

A. temperature is increased.
B. pressure is reduced.
C. temperature is increased and pressure is reduced.
D. temperature is reduced and pressure is increased.

Answer: Option D

Explanation:

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32. 

The role of a catalyst in a chemical reaction is to change the

A. equilibrium constant
B. activation energy
C. final products
D. heat of reaction

Answer: Option B

Explanation:

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33. 

The vessel dispersion number (DL) for plug flow is

A. 0
B. 500
C. 750
D.

Answer: Option A

Explanation:

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34. 

Molecularity of a reaction

A. is always equal to the overall order of reaction.
B. may not be equal to the order of reaction.
C. can't have a fractional value.
D. both (b) and (c).

Answer: Option D

Explanation:

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35. 

BET apparatus is used to determine the

A. specific surface of a porous catalyst.
B. pore size distribution.
C. pore diameter.
D. porosity of the catalyst bed.

Answer: Option A

Explanation:

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