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

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

Either A, B or C

Chemical reaction

Diffusion through ash layer

Film diffusion

Either A, B or C

Chemical reaction

Diffusion through ash layer

Film diffusion

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Chemical Reaction Engineering
For a heterogenous catalytic reaction, A + B → C, with equimole feed of A and B, the initial rate - rA0 is invariant with total pressure. The rate controlling step is

Desorption of C

Surface Kc/(1 + TS) reaction between absorbed A and B in the gas phase

Surface reaction between A in the gas phase and absorbed B

Surface reaction between absorbed A and absorbed B

Desorption of C

Surface Kc/(1 + TS) reaction between absorbed A and B in the gas phase

Surface reaction between A in the gas phase and absorbed B

Surface reaction between absorbed A and absorbed B

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Chemical Reaction Engineering
Helium-mercury method is used for the measurement of the __________ of the catalyst.

Both B & C

Surface area

Pore volume

Porosity

Both B & C

Surface area

Pore volume

Porosity

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Chemical Reaction Engineering
Ionic reactions occur in

Solid state only

Liquid state only

Solutions

Any state

Solid state only

Liquid state only

Solutions

Any state

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Chemical Reaction Engineering
Carbon particles accummulated on the catalyst used in the gas oil cracking lies in the category of __________ poison.

Selectivity

Deposited

Stability

Chemisorbed

Selectivity

Deposited

Stability

Chemisorbed

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Chemical Reaction Engineering
A first order reaction A → B occurs in an isothermal porous catalyst pellet of spherical shape. If the concentration of A at the centre of the pellet is much less than at the external surface, the process is limited by

External mass transfer

Diffusion within the pellet

Reaction

None of these

External mass transfer

Diffusion within the pellet

Reaction

None of these

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Chemical Reaction Engineering

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

Chemical Reaction Engineering For a heterogenous catalytic reaction, A + B → C, with equimole feed of A and B, the initial rate - rA0 is invariant with total pressure. The rate controlling step is

Chemical Reaction Engineering Helium-mercury method is used for the measurement of the __________ of the catalyst.

Chemical Reaction Engineering Ionic reactions occur in

Chemical Reaction Engineering Carbon particles accummulated on the catalyst used in the gas oil cracking lies in the category of __________ poison.

Chemical Reaction Engineering A first order reaction A → B occurs in an isothermal porous catalyst pellet of spherical shape. If the concentration of A at the centre of the pellet is much less than at the external surface, the process is limited by

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

Chemical Reaction Engineering
For a heterogenous catalytic reaction, A + B → C, with equimole feed of A and B, the initial rate - rA0 is invariant with total pressure. The rate controlling step is

Chemical Reaction Engineering
Helium-mercury method is used for the measurement of the __________ of the catalyst.

Chemical Reaction Engineering
Ionic reactions occur in

Chemical Reaction Engineering
Carbon particles accummulated on the catalyst used in the gas oil cracking lies in the category of __________ poison.

Chemical Reaction Engineering
A first order reaction A → B occurs in an isothermal porous catalyst pellet of spherical shape. If the concentration of A at the centre of the pellet is much less than at the external surface, the process is limited by