Question

Define olfactory indicator ?Name two substance which can be uses in olfactory indictor

Answer 1

Answer:

An Olfactory indicator is a substance whose smell varies depending on whether it is mixed with an acidic or basic solution. 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

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Answer 2

Those substances whose smell (or odour) changes in acidic or basic solutions are called olfactory indicators. Onion and vanilla extract are olfactory indicators.

The indicator which is recognized by smell is called olfactory indicator. That’s why this is usually used by visually impared students. Onion dip cloth or clove oil. 1) H2SO4- Sulphuric acid 2) HNO3- Nitric acid These are the strong acids.