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Chemical Reaction Engineering

Chemical Reaction Engineering
Holding time for flow reactors is __________ the space time, for constant fluid density

None of these
Equal to
Double
Triple

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Chemical Reaction Engineering
What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction?

Zero
1
2
3

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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

τ/0.693
0.693τ
0.5τ
2τ

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Chemical Reaction Engineering
An isothermal irreversible reaction is being carried out in an ideal tubular flow reactor. The conversion in this case will __________ with decrease in space time.

Decrease
Increase exponentially
Increase
Remain unchanged

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Chemical Reaction Engineering
In an exothermic reaction, the energy of the reacting substances as compared to that of products is

Same
More
Either A or B, depends on order of reaction
Less

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Chemical Reaction Engineering
The catalytic activity of enzymes is due to their capacity to lower the __________ energy.

None of these
Potential
Activation
Kinetic

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