For the non-catalytic reaction of particles with surrounding fluid, the time needed to achieve the same fractional conversion for particles of different but unchanging sizes is proportional to the square of particle diameter, when the __________ is the controlling resistance.

Chemical Reaction Engineering
For the non-catalytic reaction of particles with surrounding fluid, the time needed to achieve the same fractional conversion for particles of different but unchanging sizes is proportional to the square of particle diameter, when the __________ is the controlling resistance.

Film diffusion

Either A, B or C

Diffusion through ash layer

Chemical reaction

Film diffusion

Either A, B or C

Diffusion through ash layer

Chemical reaction

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Chemical Reaction Engineering
For a zero order chemical reaction, the

Half life period is directly proportion to the initial concentration of the reac-tants

Products concentration increases linerarly with time

Plot of products concentration with time is a straight line through the origin

All of these

Half life period is directly proportion to the initial concentration of the reac-tants

Products concentration increases linerarly with time

Plot of products concentration with time is a straight line through the origin

All of these

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Chemical Reaction Engineering
Semibatch reactor is preferred, when a/an

A highly exothermic reaction is to be controlled

A gas is to be reacted with liquid (e.g. hydrogenation of fat)

All of these

Undersirable side reaction (at high concentration of one of the reactants) is to be avoided

A highly exothermic reaction is to be controlled

A gas is to be reacted with liquid (e.g. hydrogenation of fat)

All of these

Undersirable side reaction (at high concentration of one of the reactants) is to be avoided

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Chemical Reaction Engineering
For an isothermal second order aqueous phase reaction, A → B, the ratio of the time required for 90% conversion to the time required for 45% conversion is

4

22

11

2

4

22

11

2

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Chemical Reaction Engineering
A batch reactor is

Most suitable for very large production rate

Suitable for liquid phase reactions involving small production rate

Least expensive to operate for a given rate

Suitable for gas-phase reactions on commercial scale

Most suitable for very large production rate

Suitable for liquid phase reactions involving small production rate

Least expensive to operate for a given rate

Suitable for gas-phase reactions on commercial scale

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Chemical Reaction Engineering
A chemical reaction, A → 3B, is conducted in a constant pressure vessel. Starting with pure A, the volume of the reaction mixture increases 3 times in 6 minutes. The fractional conversion is

0.5

1

0.33

Data insufficient, can't be predicted

0.5

1

0.33

Data insufficient, can't be predicted

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Chemical Reaction Engineering

Chemical Reaction Engineering For a zero order chemical reaction, the

Chemical Reaction Engineering Semibatch reactor is preferred, when a/an

Chemical Reaction Engineering For an isothermal second order aqueous phase reaction, A → B, the ratio of the time required for 90% conversion to the time required for 45% conversion is

Chemical Reaction Engineering A batch reactor is

Chemical Reaction Engineering A chemical reaction, A → 3B, is conducted in a constant pressure vessel. Starting with pure A, the volume of the reaction mixture increases 3 times in 6 minutes. The fractional conversion is

Chemical Reaction Engineering
For a zero order chemical reaction, the

Chemical Reaction Engineering
Semibatch reactor is preferred, when a/an

Chemical Reaction Engineering
For an isothermal second order aqueous phase reaction, A → B, the ratio of the time required for 90% conversion to the time required for 45% conversion is

Chemical Reaction Engineering
A batch reactor is

Chemical Reaction Engineering
A chemical reaction, A → 3B, is conducted in a constant pressure vessel. Starting with pure A, the volume of the reaction mixture increases 3 times in 6 minutes. The fractional conversion is