Chemical Reaction Engineering
Photochemical reaction rate does not depend significantly on temperature, because

The energy of reacting molecules exceeds the activation energy by absorption of light
It is a reversible reaction
It is an exothermic reaction
None of these

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Chemical Reaction Engineering
A Catalyst

Increases the equilibrium concentration of the product
Shortens the time to reach the equilibrium
Changes the equilibrium constant of the reaction
None of these

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Chemical Reaction Engineering
For a first order isothermal chemical reaction in a porous catalyst, the effectiveness factor is 0.3. The effectiveness factor will increase if the

Catalyst size is reduced or the catalyst diffusivity is reduced
Catalyst size is increased or the catalyst diffusivity is reduced
Catalyst size is reduced or the catalyst diffusivity is increased
Catalyst size is increased or the catalyst diffusivity is increased

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