Question

Define olfactory indicators........

Answer 1

Answer:

An Olfactory indicator is a substance whose smell varies depending on whether it is mixed with an acidic or basic solution. Simply put, olfactory indicators are substances which have a different odour in acid and base solutions. For eg: Vanilla extract has a characteristic pleasant smell, onion and clove oil, etc.

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Answer 2

Explanation:

There are certain substances whose odour (smell)changes in acidic or basic solutions. These substances are called olefactory indicators. The olefactory indicators have a characteristics odour. This odour in olefactory indicators is changed in acidic or basic solution and helps us in detecting whether a given sample solutions is acidic or basic in nature.