Question

define alfactony indicators. name two substance which can be used as alfactory indicators.
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Answer 1

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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.

• H2SO4 and HNO3 are strong acids.

Answer 2

Answer:

eg.onion extract and Vanilla extract type of olfactory indicator.

Explanation:

An all factory indicators are usually defined as those substances which smell changes in both acidic and basic solution. They mainly indicate in showing that whether the given substance is acidic or basic. This is mainly identified on the basis of the odor of the substances, which forms different colors.