Question

what is the source of litmus paper?explain its use.

Answer 1

Answer:

Litmus is a water-soluble mixture of different dyes extracted from lichens. It is often adsorbed onto filter paper to produce one of the oldest forms of pH indicator, used to test materials for acidity.

Answer 2

Litmus paper is used to test the pH of a liquid. pH refers to the acidity and/or alkalinity of a liquid. It is made from mixture of different dyes extracted from lichens applied to paper. Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic or alkaline conditions.