Question

why we use litmus paper for finding the basic and acidic character of substance

Answer 1

Because it turn blue when dip in base and it turns red when dip in acid. It also help to know the power of compounds by giving light or dark red or blue colour.

Hope this will help you!!!

Answer 2

Litmus paper is used as indicator for acid and base substances because it changes its color to indicate different substances whether it is acidic or basic. Even there are many types of litmus paper like- blue, red, purple.
Hope this will be helpful to you :)