Question

What are olfactory indicators?​

Answer 1

Answer:

Olfactory indicators are those indicators that help to identify whether the given solution is acidic or basic by changing their smell instead of colour as the other indicators do. Olfactory indicators are based on the sensation of smell to identify the nature of the substance.

Answer 2

Answer:

The term olfactory means relating to sense of smell. Those substances whose smell changes in acidic or basic solution are called as olfactory indicators.