Question

what is catalyst ? give some examples​

Answer 1

Two molecules of hydrogen peroxide will produce two molecules of water and one molecule of oxygen. A catalyst of potassium permanganate can be used to speed up this process. Adding potassium permanganate to the hydrogen peroxide will cause a reaction that produces a lot of heat, and water vapor will shoot out.

Answer 2

The chemical substances that speed up the chemical reactions and help the chemicals to react are called as catalyst

In the saponifi cation reaction NaOH is the catalyst and in addition reaction nickle is the catalyst