A chemical reaction occurs when the energy of the reacting molecules is __________ the activation energy of the reaction.

Chemical Reaction Engineering
A chemical reaction occurs when the energy of the reacting molecules is __________ the activation energy of the reaction.

Equal to

Less than

More than

Equal to or more than

Equal to

Less than

More than

Equal to or more than

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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
Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation?

None of these

Langmuir

The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process

There is no dynamic equilibrium between successive layer

None of these

Langmuir

The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process

There is no dynamic equilibrium between successive layer

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Chemical Reaction Engineering
The excess energy of the reactants required to dissociate into products is known as the __________ energy.

Threshold

Binding

Activation

Thermal

Threshold

Binding

Activation

Thermal

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Chemical Reaction Engineering
In case of a __________ reactor, the composition in the reactor and at the exit of the reactor is the same.

Tubular

Back-mix

Batch

Semi-batch

Tubular

Back-mix

Batch

Semi-batch

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Chemical Reaction Engineering
A catalyst is said to be a negative catalyst, ifit

All of these

Does not initiate the reaction

Reduces the value of equilibrium constant

Retards the rate of reaction

All of these

Does not initiate the reaction

Reduces the value of equilibrium constant

Retards the rate of reaction

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Chemical Reaction Engineering

Chemical Reaction Engineering A chemical reaction occurs when the energy of the reacting molecules is __________ the activation energy of the reaction.

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 Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation?

Chemical Reaction Engineering The excess energy of the reactants required to dissociate into products is known as the __________ energy.

Chemical Reaction Engineering In case of a __________ reactor, the composition in the reactor and at the exit of the reactor is the same.

Chemical Reaction Engineering A catalyst is said to be a negative catalyst, ifit

Chemical Reaction Engineering
A chemical reaction occurs when the energy of the reacting molecules is __________ the activation energy of the reaction.

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
Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation?

Chemical Reaction Engineering
The excess energy of the reactants required to dissociate into products is known as the __________ energy.

Chemical Reaction Engineering
In case of a __________ reactor, the composition in the reactor and at the exit of the reactor is the same.

Chemical Reaction Engineering
A catalyst is said to be a negative catalyst, ifit