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Chemical Reaction Engineering

Chemical Reaction Engineering
The residence time distribution of an ideal CSTR is

Τ exp (-t/τ)
1/τ (-t/τ)
1/τ exp (-t/τ)
Exp(-t/τ)

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Chemical Reaction Engineering
In a first order reaction, the time required to reduce the concentration of reactant from 1 mole/litre to 0.5 mole/litre will be __________ that required to reduce it from 10 moles/litre to 5 moles/litre in the same volume.

More than
Less than
Same as
Data insufficient; can't be predicted

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Chemical Reaction Engineering
Organic catalysts differ from the inorganic catalyst in the sense that the former is

Prohibitively costly
Proteinous in nature
Active at very high temperature only
Active at cryogenic temperatures only

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Chemical Reaction Engineering
Backmixing is most predominant in

A plug-flow reactor
A well stirred batch reactor
CSTR's connected in series
A single CSTR

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Chemical Reaction Engineering
In a reaction, the threshold energy is equal to (where, A = activation energy N = normal energy of reactants)

A
N
A+N
A-N

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Chemical Reaction Engineering
The response curve for a step input signal from a reactor is called C-curve. The variance of C-curve in a 'tanks in series model' comprising of 'm' tanks is equal to

1/m
m²
√m
m

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