Question

What is a catalyst ? Write any one reaction which is brought about by use of
catalyst?​

Answer 1

Explanation:

the substance used to increase the rate of reaction is called catalyst.

example in haber process

Answer 2

Answer:

catalyst is a substance which increase rate of reaction without taking part in rxn. The best example of catalyst is Reni nickel. catalyst has large surface area due to which it is used in rxn.