For a first order isothermal chemical reaction in a porous catalyst, the effectiveness factor is 0.3. The effectiveness factor will increase if the

Chemical Reaction Engineering
For a first order isothermal chemical reaction in a porous catalyst, the effectiveness factor is 0.3. The effectiveness factor will increase if the

Catalyst size is reduced or the catalyst diffusivity is increased

Catalyst size is reduced or the catalyst diffusivity is reduced

Catalyst size is increased or the catalyst diffusivity is reduced

Catalyst size is increased or the catalyst diffusivity is increased

Catalyst size is reduced or the catalyst diffusivity is increased

Catalyst size is reduced or the catalyst diffusivity is reduced

Catalyst size is increased or the catalyst diffusivity is reduced

Catalyst size is increased or the catalyst diffusivity is increased

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Chemical Reaction Engineering
The units of frequency factor in Arhenious equation

Are cycles per unit time

Are the same as those of the rate constant

Depend on the order of the reaction

Depend on temperature, pressure etc. of the reaction

Are cycles per unit time

Are the same as those of the rate constant

Depend on the order of the reaction

Depend on temperature, pressure etc. of the reaction

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Chemical Reaction Engineering
If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the __________ diffusion.

Ash layer

Film

Pore

None of these

Ash layer

Film

Pore

None of these

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Chemical Reaction Engineering
Rate of a chemical reaction is not influenced by the

Temperature

Catalyst

Number of molecules of reactants taking part in a reaction

Reactants concentration

Temperature

Catalyst

Number of molecules of reactants taking part in a reaction

Reactants concentration

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Chemical Reaction Engineering
A liquid decomposes by irreversible first order kinetics and the half life period of this reaction is 8 minutes. The time required for 75% conversion of the liquid will be __________ minutes.

4

12

16

8

4

12

16

8

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Chemical Reaction Engineering
The reactions of high molecularity are rare, because

Of requirement of very large concentration for such reactions

Of very large activation energy of many bodies

Many body collisions are not favoured energetically

Of low probability of many body collisions

Of requirement of very large concentration for such reactions

Of very large activation energy of many bodies

Many body collisions are not favoured energetically

Of low probability of many body collisions

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Chemical Reaction Engineering

Chemical Reaction Engineering For a first order isothermal chemical reaction in a porous catalyst, the effectiveness factor is 0.3. The effectiveness factor will increase if the

Chemical Reaction Engineering The units of frequency factor in Arhenious equation

Chemical Reaction Engineering If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the __________ diffusion.

Chemical Reaction Engineering Rate of a chemical reaction is not influenced by the

Chemical Reaction Engineering A liquid decomposes by irreversible first order kinetics and the half life period of this reaction is 8 minutes. The time required for 75% conversion of the liquid will be __________ minutes.

Chemical Reaction Engineering The reactions of high molecularity are rare, because

Chemical Reaction Engineering
For a first order isothermal chemical reaction in a porous catalyst, the effectiveness factor is 0.3. The effectiveness factor will increase if the

Chemical Reaction Engineering
The units of frequency factor in Arhenious equation

Chemical Reaction Engineering
If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the __________ diffusion.

Chemical Reaction Engineering
Rate of a chemical reaction is not influenced by the

Chemical Reaction Engineering
A liquid decomposes by irreversible first order kinetics and the half life period of this reaction is 8 minutes. The time required for 75% conversion of the liquid will be __________ minutes.

Chemical Reaction Engineering
The reactions of high molecularity are rare, because