Question

a) Write the principle on which olfactory indicator works?
2M
b) Choose the olfactory indicators from the following and give their importance in identifying
acids and base
i) Onion extract ii) Methyl orange 111) Vanilla extract iv) Clove oil​

Answer 1

Answer:

The substances whose smell/odour changes in acidic or basic solution are called as olfactory indicators. It works on the Principle that when an acid or base is added to it, its characteristics smell can't be detected

Explanation:

b.