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Litmus is obtained from which source?

Answer and explanation

Correct answer: Lichens

The governing concept is the origin of natural acid-base indicators. Litmus is a dye mixture obtained from lichens, organisms formed through a close association between a fungus and a photosynthetic partner. It is processed into litmus paper, which changes colour in acidic and basic solutions. Therefore option A, lichens, is correct. Rose petals can provide other natural colour indicators, but they are not the standard source of litmus; neem and wheat are unrelated to litmus production.

Related tags

LitmusLichensNatural IndicatorAcid Base TestAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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