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Chemical Reaction Engineering

Chemical Reaction Engineering
When a catalyst increases the rate of forward reaction, the value of rate constant

Increases
Decreases
Remain same
Becomes infinite

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Chemical Reaction Engineering
An endothermic second order reaction is carried out in an adiabatic plug flow reactor. The rate of heat generation is

Constant throughout the reactor
Maximum at the inlet of the reactor
Maximum at the exit of the reactor
Maximum at the centre of the reactor

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Chemical Reaction Engineering
If the time required to change the concentration of reactant to half its original value is independent of the initial concentration, the order of reaction is

Two
One
Zero
Three

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Chemical Reaction Engineering
The units of frequency factor in Arhenious equation

Depend on temperature, pressure etc. of the reaction
Are cycles per unit time
Depend on the order of the reaction
Are the same as those of the rate constant

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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

0.693τ
2τ
τ/0.693
0.5τ

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Chemical Reaction Engineering
Catalyst is a substance, which __________ chemical reaction.

Increases the speed of a
Decreases the speed of a
Alters the value of equilibrium constant in a reversible
Can either increase or decrease the speed of a

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