Question

what is promoter and poisons?? ​

Answer 1

Promoters : Substances which themselves are not catalysts, but when mixed in small quantities with the catalysts increase their efficiency are called as promoters or activators.

Poisons : Substances which destroy the activity of the catalyst by their presence are known as poisons.

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Answer 2

$\huge\mathfrak\purple{♡Answer}$

Substances which themselves are not catalysts, but when mixed in small quantities with the catalysts increase their efficiency are called as promoters or activators. Catalytic poisons : Substances which destroy the activity of the catalyst by their presence are known as catalytic poisons.