Question
Name the source from which litmus solution is obtained. What is the use of this solution?
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Answer
Litmus solution is obtained from lichens. A natural dye extracted from lichens is dissolved in distilled water to obtain litmus solution. It is used as an indicator to distinguish between acids and bases.
| Solution | Colour of litmus solution |
| Acidic | Red |
| Basic | Blue |
| Neutral | No change |
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