Which of them is not a synthetic indicator?
a) Methyl orange b) Phenolphthalein c) Litmus d) None of these
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Answer:
phenophthalin is a synthetic indicator
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(C) Litmus
Also known as Litmus Paper.
Litmus Paper
Litmus paper is a filter paper we treat with a natural-soluble dye that the lichens provide us. The piece of paper that gives the result that is referred to as litmus paper can come in use as a pH indicating tool.
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