"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."

Inner catalyst core of radius R/8 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/2 does not participate in reaction

Inner catalyst core of radius R/8 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/2 does not participate in reaction

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way, that the

Larger reactors have more space time compared to smaller ones

Space time for each parallel line is same

None of these

Space time for parallel lines is different

Larger reactors have more space time compared to smaller ones

Space time for each parallel line is same

None of these

Space time for parallel lines is different

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
In which of the following gaseous phase reactions, the equilibrium of the reaction remains unaffacted by pressure changes ?

2O? ? 3O?

2NO? ? N?O?

2SO? + O? ? 2SO?

N? + O? ? 2NO

2O? ? 3O?

2NO? ? N?O?

2SO? + O? ? 2SO?

N? + O? ? 2NO

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
In case of calcination of limestone, CaCO₃ CaO + CO₂, the addition of more of CaO will result in __________ in the concentration of CO₂.

Unpredictable from the data

No change

Increase

Decrease

Unpredictable from the data

No change

Increase

Decrease

ANSWER DOWNLOAD EXAMIANS APP

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

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
With increase in initial concentration, the fractional conversion of a first order reaction in a given time

Decreases

Unpredictable

Increases

Remains constant

Decreases

Unpredictable

Increases

Remains constant

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering

Chemical Reaction Engineering The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way, that the

Chemical Reaction Engineering In which of the following gaseous phase reactions, the equilibrium of the reaction remains unaffacted by pressure changes ?

Chemical Reaction Engineering In case of calcination of limestone, CaCO₃ CaO + CO₂, the addition of more of CaO will result in __________ in the concentration of CO₂.

Chemical Reaction Engineering With increase in initial concentration, the fractional conversion of a first order reaction in a given time

Chemical Reaction Engineering
The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way, that the

Chemical Reaction Engineering
In which of the following gaseous phase reactions, the equilibrium of the reaction remains unaffacted by pressure changes ?

Chemical Reaction Engineering
In case of calcination of limestone, CaCO₃ CaO + CO₂, the addition of more of CaO will result in __________ in the concentration of CO₂.

Chemical Reaction Engineering
With increase in initial concentration, the fractional conversion of a first order reaction in a given time