Question

what type of indicator are used to test its acid or base​

Answer 1

Answer:

Litmus is a natural indicator.

Blue litmus paper turns red if the substance is acidic. Red litmus paper turns blue if the substance is basic or alkaline. Litmus turns red in acidic solutions and blue in basic solutions.

Answer 2

Explanation:

Indicators may be natural such as litmus paper, purple cabbage juice etc and may be human made like methyl orange which are used to test if a substance is acidic or basic in nature.

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