Question

Give ex for use of olfactory indicator in our daily life

Answer 1

Olfactory indicators can be used to engage visually impaired students in laboratory work.Olfactory indicators are those which identify acids and bases through smell or odour.  Olfactory indicators can be used in the laboratory to test whether a solution is a base or an acid, a process called olfactory titration. Onion , clove oil and vanilla extract are examples. They lose their smell with bases but not with acids.

Answer 2

Answer:

onion,clove oil,garlic and vannilla ectracts it change the smell in bases not in acids