What is litmus? How is it prepared?
It's a question for class 7
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Answer: Litmus solutions can beprepared by dissolving these lichen-based dyes in neutral-pH water and observing the change in color when chemicals of unknown pH are added. Litmus paper is pH neutral paper soaked in litmus solution and dried. ...
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Explanation:
a dye obtained from certain lichens that is red under acid conditions and blue under alkaline conditions.
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