Which one of the following can be used as an acid base indicator by a visually impaired student?

Methyl orange

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Phenolphthalein

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Olfactory indicator

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Methyl red

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Solution

The correct option is C Olfactory indicator
Olfactory indicator is a substance whose smell varies depending on whether it is mixed with an acidic or basic solution. These are used in labs to test the acidity or basicity of the solution. Onion, clove oil and vanilla extract are examples.

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Which one of the following can be used as an acid base indicator by a visually impaired student?

The correct option is C Olfactory indicatorOlfactory indicator is a substance whose smell varies depending on whether it is mixed with an acidic or basic solution. These are used in labs to test the acidity or basicity of the solution. Onion, clove oil and vanilla extract are examples.

The correct option is C Olfactory indicator
Olfactory indicator is a substance whose smell varies depending on whether it is mixed with an acidic or basic solution. These are used in labs to test the acidity or basicity of the solution. Onion, clove oil and vanilla extract are examples.