For high conversion in a highly exothermic solid catalysed reaction, use a __________ bed reactor.

A reaction which is catalysed by an acid is also catalysed by any substance, which has a tendency to

A

Lose a proton

B

Gain a proton

C

Lose an electron

D

None of these

A reaction which is catalysed by a base is catalysed by all substances which have a tendency to

A

Lose a proton

B

Gain a proton

C

Gain an electron

D

None of these

Kinetics of a solid catalysed reaction can best be studied in a __________ reactor.

A

Batch

B

Plug-flow

C

Mixed

D

None of these

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

A

Is always equal to

B

Is always greater than

C

Is always less than

D

May be greater or less than

For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the __________ adsorption.

A

Physical

B

Chemical

C

Both A and B

D

Neither A nor B

Pressure drop in a fluidised bed reactor is __________ that in a similar packed bed reactor.

A

Less than

B

More than

C

Same as

D

None of these

With increase in the order of reaction (for all positive reaction orders), the ratio of the volume of mixed reactor to the volume of plug flow reactor (for identical feed composition, flow rate and conversion)

A

Increases

B

Decreases

C

Remains same

D

Increases linearly

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

A

High recycle for pure gas

B

Plug flow for dilute liquid requiring no large preheating of feed

C

Cold shot operations for a dilute solution requiring large preheating to bring the stream upto the reaction temperature

D

All of the above

Fractional conversion __________ for an exothermic reversible chemical reaction, when the temperature is maximum.

A

Increases

B

Remains unchanged

C

Decreases

D

Unpredictable from the data

In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for

A

Fast reactions in catalyst of small pore diameter

B

Fast reaction in catalyst of large pore diameter

C

Slow reactions in catalyst of small pore diameter

D

Slow reactions in catalyst of large pore diameter

For high conversion in a highly exothermic solid catalysed reaction, use a __________ bed reactor.

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