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

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

44015

6

7

3

44015

6

7

3

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
In case of a P.F.R., there

Should not be any mixing along the flow path

May be lateral mixing of fluid

Both A and B

Neither A nor B

Should not be any mixing along the flow path

May be lateral mixing of fluid

Both A and B

Neither A nor B

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is __________ that of mixed reactor.

Greater than

Equal to

Unpredictable from the data

Smaller than

Greater than

Equal to

Unpredictable from the data

Smaller than

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
A space time of 3 hours for a flow reactor means that

It takes three hours to dump the entire volume of the reactor with feed

The time required to process one reactor volume of feed (measured at specified conditions) is 3 hours

Conversion is cent per cent after three hours

Three reactor volumes of feed can be processed every hour

It takes three hours to dump the entire volume of the reactor with feed

The time required to process one reactor volume of feed (measured at specified conditions) is 3 hours

Conversion is cent per cent after three hours

Three reactor volumes of feed can be processed every hour

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
Rate determining step in a reaction consisting of a number of steps in series is the __________ step.

Intermediate

Data insufficient; can't be predicted

Slowest

Fastest

Intermediate

Data insufficient; can't be predicted

Slowest

Fastest

ANSWER DOWNLOAD EXAMIANS APP

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

Rate constant

Reaction rate

Energy of activation

Frequency factor

Rate constant

Reaction rate

Energy of activation

Frequency factor

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering

Chemical Reaction Engineering In case of a P.F.R., there

Chemical Reaction Engineering The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is __________ that of mixed reactor.

Chemical Reaction Engineering A space time of 3 hours for a flow reactor means that

Chemical Reaction Engineering Rate determining step in a reaction consisting of a number of steps in series is the __________ step.

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

Chemical Reaction Engineering
In case of a P.F.R., there

Chemical Reaction Engineering
The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is __________ that of mixed reactor.

Chemical Reaction Engineering
A space time of 3 hours for a flow reactor means that

Chemical Reaction Engineering
Rate determining step in a reaction consisting of a number of steps in series is the __________ step.

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