Question

Promoter.

a.

initiates a chemical reaction and is a catalyst by itself.

b.

atlers the position of equilibrium in a reversible reaction.

c.

increases the number of active centres by increasing the unevenness of catalyst surface and by creating discontinuities in the crystals.

d.

all (a), (b) and (c).

Answer: (c).increases the number of active centres by increasing the unevenness of catalyst surface and by creating discontinuities in the crystals.

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