Question

definition of indicators
NCERT ch 5
grade 7 science acid and bases​

Answer 1

Explanation:

A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH of the solution can be determined visually. Hence, a pH indicator is a chemical detector for hydronium ions or hydrogen ions in the Arrhenius model.

Answer 2

INDECATORS : are the substance or detector which tell us any liquid is either ACID or BASE .

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