What is the simplest way to test the pH of a solution?

by using a litmus paper

Explanation:

litmus paper is used to get a basic indication of whether the solution is acidic or basic.

an acid turns red litmus paper blue

a base turns blue litmus paper red

We can test the ph of a solution by placing the litmus paper in the solution.

Explanation:

We can test the ph of a solution in many ways. We should place the litmus paper in the solution. After placing the litmus paper in the solution we should check the color of the paper. The color of the litmus paper changes after placing it in the solution. We should measure the value of the solution. If the value is below 7, the solution is acidic. If the value is correctly 7, it is neutral. If the value is above 7, it is alkaline.