Name three natural indicators and explain their test with acids and bases
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The three most common indicators to test for acids and bases are:
- Litmus.
- Methyl orange.
- Phenolphthalein.
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Answer:
Litmus, turmeric, red cabbage, China rose, etc. are some common natural indicators used widely to show the acidic or basic character of substances. Litmus: Litmus is obtained from lichens. The solution of litmus is purple in colour.
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Indicator:
Indicator Red litmus
Original colour Red
Acid No change
Base Blue
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