Chemical Reaction Engineering
In a reversible reaction, a catalyst increases the rate of forward reaction

And decreases that of the backward reaction
Only
To a greater extent than that of the backward reaction
And the backward reaction equally

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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?

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

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Chemical Reaction Engineering
For an ideal gas mixture undergoing a reversible gaseous phase chemical reaction, the equilibrium constant

Increases /decreases with pressure depending on the stoichiometric co-efficients of the reaction
Increases with pressure
Decreases with pressure
Is independent of pressure

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