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

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

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Chemical Reaction Engineering
In case of staged packed bed reactors carrying out exothermic reaction, use

Plug flow for dilute liquid requiring no large preheating of feed
All of these
High recycle for pure gas
Cold shot operations for a dilute solution requiring large preheating to bring the stream upto the reaction temperature

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Chemical Reaction Engineering
A pollutant P degrades according to first order kinetics. An aqueous stream containing P at 2 kmole/m³ and volumetric flow rate 1m³ /h requires a mixed flow reactor of volume V to bring down the pollutant level to 0.5 kmole/m³ . The inlet concentration of the pollutant is now doubled and the volumetric flow rate is tripled. If the pollutant level is to be brought down to the same level of 0.5 kmole/m³ , the volume of the mixed flow reactor should be increased by a factor of

3
6
44015
7

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Chemical Reaction Engineering
For an ideal gas mixture undergoing a reversible gaseous phase chemical reaction, the equilibrium constant

Increases /decreases with pressure depending on the stoichiometric co-efficients of the reaction
Decreases with pressure
Increases with pressure
Is independent of pressure

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