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Chemical Reaction Engineering

Chemical Reaction Engineering
The dimensions of rate constant for reaction 3A → B are (l/gm mole)/min. Therefore the reaction order is

3
1
2

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Chemical Reaction Engineering
An exothermic reaction takes place in an adiabatic reactor. The product temperature __________ reactor feed temperature.

May be greater or less than
Is always less than
Is always greater than
Is always equal to

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Chemical Reaction Engineering
Which of the following is not a unit of reaction rate?

Moles for med/(surface of catalyst) (time)
Moles formed/volume of reactor) (time)
None of these
Mole formed/volume of catalyst) (time)

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Chemical Reaction Engineering
Enzymes (a protein) are catalysts found in organisms. Its efficiency of catalysing a reaction is due to its capacity to lower the activation energy of the reaction. The enzyme ptyalin used for food digestion is present in

Intestine
Blood
Saliva
Gland

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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.

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

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Chemical Reaction Engineering
Non-catalytic fluid-solid reactions are represented by __________ model.

Unreacted core
Both A and B
Neither A and B
Continuous reaction

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