Question

Define the terms
(i) Litmus ​

Answer 1

Answer:

substance that turns red when it touches an acid and blue when it touches an alkali.

Answer 2

Answer:

Definition of litmus

1: a coloring matter from lichens that turns red in acid solutions and blue in alkaline solutions and is used as an acid-base indicator

2: the critical factor in a litmus test

Explanation:

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