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Turmeric is yellow in acidic and neutral solutions; in basic solutions turmeric is red to brown.

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What are some names of natural indicators and how do they detect acids and bases?

Some natural indicators include red cabbage, turmeric, and blueberries. These indicators change color in the presence of acids and bases due to their chemical properties. For example, red cabbage contains a pigment that changes from red in acids to green/blue in bases.


Why the termaric stains turns to red when soak it in the detergent?

The red color observed when turmeric stains interact with detergent may be due to the detergent breaking down the chemical structure of the turmeric molecules, causing a change in their absorption properties. This results in the turmeric shifting from its characteristic yellow color to a reddish hue.


Instead of red cabbage what other substance can be used in an indicator test that would change colour?

Examples of substances that can be used in an indicator test and change color include red beet juice, turmeric, blueberries, and purple grape juice. These substances contain natural pH-sensitive pigments that react to acid or base solutions, resulting in color changes that can be used to determine pH levels.


Is plumbagin a natural indicator?

Yes, plumbagin is a natural indicator commonly found in plants like Plumbago and Drosera. It changes color based on the pH of the solution it is in, making it useful as a pH indicator in laboratory experiments.


What are the 5 natural indicators?

The five natural indicators are litmus, red cabbage juice, turmeric, grape juice, and beetroot juice. These indicators change color in the presence of acids or bases, making them useful for determining the pH of a solution.