What are olfactory indicators? Give examples
Care should be taken while diluting acid. Why?
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Explanation:
1. Olfactory indicators are those indicators which showcase a particular change is odour, when subjected to an acid or a base. They show different smells, or they show smell in one and not in the other, when kept in an acid or base. They act as indicators to find out is a substance is acid or base. Eg. Onion
2. Acids give out immense heat in the process of dilution. This heat can cause harm and injuries. Therefore Care should be taken during the dilution.
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