Question

define olfactory indicator?write two substances which can be used as olfactory indicator​

Answer 1

Answer:

• Answer. olfactory indicators indicate whether the solution is an acid or base by varying the smell when it is mixed with respective solutions. clove oil,vanilla and onion are the examples.

Answer 2

The indicator which change colour in different medium called as olfactory indicator.

Explanation:

ex. onion and clove oil