Question

5.The acidic and basic nature of a substance is
tested by using an​

Answer 1

The acidic and basic nature of a substance is

tested by using an Litmus paper

Answer 2

Answer:

Litmus paper

Litmus paper is paper that has been treated with a specific indicator—a mixture of 10 to 15 natural dyes obtained from lichens (mainly Roccella tinctoria) that turns red in response to acidic conditions (pH 7). When the pH is neutral (pH = 7), then the dye is purple.