Question

Substances which change colour when u acid or alkaline

Answer 1

Answer:

your question is not proper.

but i ll try

You can check it weather it is acid or base by Adding litmus paper

Answer 2

Explanation:

The oxide that gives a base in water is known as a basic oxide. An amphoteric solution is a substance that can chemically react as either acid or base. However, it is also possible for an oxide to be neither acidic nor basic, but is a neutral oxide.