Question

when an acidic or basic nature of a substance is tested by using an _________​

Answer 1

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Litmus paper, pH paper, indicators and pH meter can be used to test whether a substance is acidic or basic. Litmus paper is used to determine whether an aqueous solution is acidic (pH<7.0) or basic/alkaline (pH>7.0) in nature.

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Answer 2

Answer is = Blue litmus pepper