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Chemical Reaction Engineering

Chemical Reaction Engineering
A chemical reaction occurs, when the energy of the reacting molecules is __________ the activation energy of reaction.

More than
Equal to or more than
Less than
Equal to

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Chemical Reaction Engineering
A pulse tracer is introduced in an ideal CSTR (with a mean residence time ι) at time, t = 0. The time taken for the exit concentration of the tracer to reach half of its initial value will be

2τ
0.5τ
0.693τ
τ/0.693

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Chemical Reaction Engineering
For multiple reactions, the flow pattern within the vessel affects the

Both A and B
Size requirement
Distribution of reaction products
Neither A nor B

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Chemical Reaction Engineering
In case of a __________ reactor, the composition in the reactor and at the exit of the reactor is the same.

Back-mix
Batch
Semi-batch
Tubular

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Chemical Reaction Engineering
Reactions with high activation energy are

Temperature insensitive
Always reversible
Very temperature sensitive
Always irreversible

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Chemical Reaction Engineering
The increase in the rate of reaction with temperature is due to

Decrease in activation energy
None of these
Increase in the average kinetic energy of the reacting molecules
Increase in the number of effective collisions

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