Question

Litmus is a blue dye obtained from lichens
True or false

Answer 1

Explanation:

Litmus is a blue dye used to indicate acidic or basic strength of different solutions and it indicates the pH by changing its colour. ... Litmus which is a mixture of dyes obtained from lichens is adsorbed onto a filter paper to make a litmus paper to perform pH test. This is the oldest method for acidity measurement.