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प्रश्न
How will you prepare natural indicator from turmeric powder?
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उत्तर
- Turmeric indicator is one of the natural indicator.
- By adding a small amount of water to turmeric powder, a paste is prepared.
- This is applied on a blotting paper or filter paper and dried.
- These strips are used as indicators to find the nature of the solution.
- In acidic solution, turmeric indicator paper has no change in colour.
- That means, it remains yellow. In the basic solution, the colour changes from yellow to red.
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