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Chemical Reaction Engineering

Chemical Reaction Engineering
A chemical reaction is of zero order, when the reaction rate is (where, CA = concentration of reactant)

∝ CA
Independent of temperature
∝ 1/CA
None of these

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Chemical Reaction Engineering
Effectiveness factor of a catalyst pellet is a measure of the __________ resistance.

Chemical reaction
None of these
Pore diffusion
Gas film

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Chemical Reaction Engineering
Time required for 50% decomposition of a liquid in an isothermal batch reactor following first order kinetics is 2 minutes. The time required for 75% decomposition will be about __________ minutes.

3
4
6
8

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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
In which of the following gaseous phase reversible reactions, the product yield can not be increased by the application of high pressure?

N₂ + O₂ ⇋ 2NO
2SO₂ + O₂ ⇋ 2SO₃
N + 3H₂ ⇋ 2NH₃
PCl3 + Cl₂ ⇋ PCl5

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Chemical Reaction Engineering
Arhenious equation shows the variation of __________ with temperature.

Rate constant
Energy of activation
Reaction rate
Frequency factor

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