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
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

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

Langmuir

None of these

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

Langmuir

ANSWER DOWNLOAD EXAMIANS APP

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

Pore diffusion

Ash layer diffusion

Chemical reaction

Film diffusion

Pore diffusion

Ash layer diffusion

Chemical reaction

Film diffusion

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
The rate of the reaction, X → Y, quadruples when the concentration of 'X' is doubled. The rate expression for the reaction is, r = K Cxn, the value of 'n' in this case will be

3

2

1

3

2

1

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
The knowledge of initial concentration and rate constant is necessary to determine the half life time of a reaction of __________ order.

Zero

None of these

Second

First

Zero

None of these

Second

First

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
Which of the following chemical reactions will be favoured by low pressure ?

N₂ + O₂ ⇋ 2NO

None of these

2HI ⇋ H₂ + I₂

N₂O₂ ⇋ 2NO₂

N₂ + O₂ ⇋ 2NO

None of these

2HI ⇋ H₂ + I₂

N₂O₂ ⇋ 2NO₂

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for

Fast reactions in catalyst of small pore diameter

Fast reaction in catalyst of large pore diameter

Slow reactions in catalyst of small pore diameter

Slow reactions in catalyst of large pore diameter

Fast reactions in catalyst of small pore diameter

Fast reaction in catalyst of large pore diameter

Slow reactions in catalyst of small pore diameter

Slow reactions in catalyst of large pore diameter

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering

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

Chemical Reaction Engineering The rate of the reaction, X → Y, quadruples when the concentration of 'X' is doubled. The rate expression for the reaction is, r = K Cxn, the value of 'n' in this case will be

Chemical Reaction Engineering The knowledge of initial concentration and rate constant is necessary to determine the half life time of a reaction of __________ order.

Chemical Reaction Engineering Which of the following chemical reactions will be favoured by low pressure ?

Chemical Reaction Engineering In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for

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

Chemical Reaction Engineering
The rate of the reaction, X → Y, quadruples when the concentration of 'X' is doubled. The rate expression for the reaction is, r = K Cxn, the value of 'n' in this case will be

Chemical Reaction Engineering
The knowledge of initial concentration and rate constant is necessary to determine the half life time of a reaction of __________ order.

Chemical Reaction Engineering
Which of the following chemical reactions will be favoured by low pressure ?

Chemical Reaction Engineering
In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for