Question

Question 6

Litmus, a natural dye is an extract of which of the following?
(a) China rose (Gudhal)
(b) Beetroot
(c) Lichen
(d) Blueberries (Jamun)

Answer 1

Lichen gives the natural purple dye, litmus, which is used as an acid-base indicator. Litmus turns red when added to an acidic solution and blue when added to a basic solution.