Question

what is catalyst ? give one example of it ​

Answer 1

Answer:

A catalyst is substance i.e a element or a compound that increases the rate of chemical reaction.

Examples:

1) Nickel, Ni is used in hydrogenation of palm oil into margarine.

2) Iron, Fe is used in Haber process. (Manufacturing of ammonia)

Answer 2

The substance in whose presence the rate of chemical reaction changes , without causing chemical change to it , is called catalyst.

example : manganese dioxide