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

Diffusion through ash layer

Chemical reaction

Film diffusion

Either A, B or C

Diffusion through ash layer

Chemical reaction

Film diffusion

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Chemical Reaction Engineering
The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the

Increased temperature reduces the activation energy

Fraction of molecules having threshold energy increases

Value of threshold energy decreases

Collision frequency increases

Increased temperature reduces the activation energy

Fraction of molecules having threshold energy increases

Value of threshold energy decreases

Collision frequency increases

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Chemical Reaction Engineering
__________ explains the mechanism of catalysis.

Activated complex theory

None of these

Thermodynamics

Collision theory

Activated complex theory

None of these

Thermodynamics

Collision theory

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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

Reaction

Diffusion within the pellet

External mass transfer

None of these

Reaction

Diffusion within the pellet

External mass transfer

None of these

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Chemical Reaction Engineering
The rate constant of a chemical reaction increases by increasing the

Reactant's concentration

Temperature

None of these

Pressure

Reactant's concentration

Temperature

None of these

Pressure

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Chemical Reaction Engineering
From among the following, choose one which is not an exothermic process.

Ammonia synthesis

Methanol synthesis

Catalytic cracking

Oxidation of sulphur

Ammonia synthesis

Methanol synthesis

Catalytic cracking

Oxidation of sulphur

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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 The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the

Chemical Reaction Engineering __________ explains the mechanism of catalysis.

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 The rate constant of a chemical reaction increases by increasing the

Chemical Reaction Engineering From among the following, choose one which is not an exothermic process.

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
The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the

Chemical Reaction Engineering
__________ explains the mechanism of catalysis.

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
The rate constant of a chemical reaction increases by increasing the

Chemical Reaction Engineering
From among the following, choose one which is not an exothermic process.