What do you mean by Olfactory indicators ?
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68.4K+ Views. Hint: We know that 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.
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Olfactory indicators are those indicators that help to identify whether the given solution is acidic or basic by changing their smell instead of colour as the other indicators do. Olfactory indicators are based on the sensation of smell to identify the nature of the substance.
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