"A spherical porous catalyst particle of radius R is subjected to reactant A which reacts to form B by a zero order surface reaction A → B. Film mass transfer resistance is negligible and pore diffusion of A is rate controlling. The effectiveness factor of the catalyst is reported as 7/8. Which of the following statement is true?A. Inner catalyst core of radius R/8 does not participate in reaction."

Chemical Reaction Engineering
"A spherical porous catalyst particle of radius R is subjected to reactant A which reacts to form B by a zero order surface reaction A → B. Film mass transfer resistance is negligible and pore diffusion of A is rate controlling. The effectiveness factor of the catalyst is reported as 7/8. Which of the following statement is true?A. Inner catalyst core of radius R/8 does not participate in reaction."

Ffectiveness factor for a zero order reaction can not be 7/8 as it must always be 1

Inner catalyst core of radius R/8 does not participate in reaction

Inner catalyst core of radius R/2 does not participate in reaction

Inner catalyst core of radius 7R/8 does not participate in reaction

Ffectiveness factor for a zero order reaction can not be 7/8 as it must always be 1

Inner catalyst core of radius R/8 does not participate in reaction

Inner catalyst core of radius R/2 does not participate in reaction

Inner catalyst core of radius 7R/8 does not participate in reaction

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Chemical Reaction Engineering
The fractional volume change between no conversion and complete conversion, for the isothermal gas phase reaction, 2A → R, is

1.5

-0.5

1

0.5

1.5

-0.5

1

0.5

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Chemical Reaction Engineering
Which one is the rate controlling step in a solid-gas non-catalytic reaction occurring at very high temperature?

Pore diffusion

Film diffusion

Ash layer diffusion

Chemical reaction

Pore diffusion

Film diffusion

Ash layer diffusion

Chemical reaction

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Chemical Reaction Engineering
For a tubular flow reactor with uniform concentration and temperature, the independent variable is

Time

Diameter

None of these

Length

Time

Diameter

None of these

Length

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Chemical Reaction Engineering
Space time equals the mean residence time

For CSTR

For large diameter tubular reactor

When the density of the reaction mixture is constant

For narrow diameter tubular reactor

For CSTR

For large diameter tubular reactor

When the density of the reaction mixture is constant

For narrow diameter tubular reactor

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Chemical Reaction Engineering
Batch process is preferred over continuous process, when the

Same equipment can not be used for several processes of the same nature

Product yields and quality can not be achieved in continuous process, because of long residence time

All of these

Sales demand of product is not steady

Same equipment can not be used for several processes of the same nature

Product yields and quality can not be achieved in continuous process, because of long residence time

All of these

Sales demand of product is not steady

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Chemical Reaction Engineering

Chemical Reaction Engineering The fractional volume change between no conversion and complete conversion, for the isothermal gas phase reaction, 2A → R, is

Chemical Reaction Engineering Which one is the rate controlling step in a solid-gas non-catalytic reaction occurring at very high temperature?

Chemical Reaction Engineering For a tubular flow reactor with uniform concentration and temperature, the independent variable is

Chemical Reaction Engineering Space time equals the mean residence time

Chemical Reaction Engineering Batch process is preferred over continuous process, when the

Chemical Reaction Engineering
The fractional volume change between no conversion and complete conversion, for the isothermal gas phase reaction, 2A → R, is

Chemical Reaction Engineering
Which one is the rate controlling step in a solid-gas non-catalytic reaction occurring at very high temperature?

Chemical Reaction Engineering
For a tubular flow reactor with uniform concentration and temperature, the independent variable is

Chemical Reaction Engineering
Space time equals the mean residence time

Chemical Reaction Engineering
Batch process is preferred over continuous process, when the