1.

Promoter

A. Initiates a chemical reaction and is a catalyst by itself
B. Alters 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» D. All (A), (B) and (C)


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