Question

define olfactory indicators !!!

Answer 1

hey buddy..!!
Olfactory indicators are those which indicates the substance acid or base on the basis of smell.
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Answer 2

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$ofactory \: indicators$
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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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