Question

How will you prepare natural indicator from turmeric powder?

Answer 1

1. Turmeric indicator is one of the natural indicator.
2. By adding a small amount of water to turmeric powder, a paste is prepared.
3. This is applied on a blotting paper or filter paper and dried.
4. These strips are used as indicators to find the nature of the solution.
5. In acidic solution, turmeric indicator paper has no change in colour.
6. That means, it remains yellow. In the basic solution, the colour changes from yellow to red.