Question

Write a short note on natural indicators.

Answer 1

Natural Indicators are the solutions prepared from various brightly coloured parts of plants such as flowers, stems, roots and leaves. The solutions are prepared by boiling the coloured parts in water for some time and thereafter straining the part. These indicator solutions show a change in colour in the presence of an acid or a base. Example: Red cabbage juice changes to deep red in acids and in the presence of bases, it changes to green and yellow.