Question

olfactory indicator explain me in eas​

Answer 1

Answer:

Olfactory indicators are the indicators which indicates whether a following substance is an acid or a base by changing their smell...

Explanation:

Eg-: onion, vanilla essence, clove etc.

The given examples..lose their smell on basic medium or substance whereas they retain their smell on acidic medium or acidic substance.....

hope u got ur answer....

thank u....

Answer 2

Answer:

A universal indicator is a pH indicator made of a solution of several compounds that exhibits several smooth colour changes over a wide range pH values to indicate the acidity or alkalinity of solutions.

hope this will helps u.......be happy........