Chemical Reaction Engineering
With an increase in pressure in gaseous phase chemical reactions, the fractional conversion __________ when the number of moles decreases.

Unpredictable from the data
Decreases
Remains unaffected
Increases

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Chemical Reaction Engineering
A catalyst loses its activity due to

Covering of the catalytic active sites by a foregin substance
Agglomeration of metal particles caused by thermal sintering of the solid surface
Loss in surface area of the active component
All of these

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