Question

What are catalyst? Explain

Answer 1

Answer:

Those substances which either speed up or slow down the rate of chemical reaction are known as catalysts.

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Answer 2

Catalyst:

$\bullet$ The substances which increase the speed of a reaction are called as catalyst.

There are two type of catalysts:

(1) Organic catalysts

Example: Enzymes

(2) Inorganic catalysts

Example: Ni used in hydrogenation of oil