Chemical Engineering - Chemical Reaction Engineering

11. 

A catalyst in a chemical reaction

A. decreases the activation energy.
B. alters the reaction mechanism.
C. increases the frequency of collisions of reacting species.
D. all (a), (b) and (c).

Answer: Option D

Explanation:

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12. 

Slurry reactors are characterised by the

A. lack of intraparticle diffusion resistance.
B. presence of two mobile phases.
C. both (a) and (b).
D. neither (a) nor (b).

Answer: Option C

Explanation:

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13. 

Limiting reactant in a chemical reaction decides the

A. rate constant
B. conversion
C. reaction speed
D. equilibrium constant.

Answer: Option B

Explanation:

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14. 

Consider the 'n' th order irreversible liquid phase reaction A B. Which one of the following plots involving half life of the reaction (t1/2) and the initial reactant concentration (CA0) gives a straight line plot ?

A. CA0 Vs t1/2
B. ln CA0 Vs t1/2
C. CA0 Vs ln t1/2
D. ln CA0 Vs ln t1/2

Answer: Option C

Explanation:

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15. 

The rate of forward reaction, at chemical equilibrium is____the rate of backward reaction.

A. more than
B. less than
C. equal to
D. either (b) or (c)

Answer: Option C

Explanation:

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