Question

Ramesh prepared onion extract and kept in the refrigerator whole night. How can it be used as olfactory indicator

Answer 1

Answer:

Here onion is also an olfactory indicator. This is because onion loses its smell when added with base and does not change its smell when added to acid.

Explanation:

Substances which change their smell when mixed with acid or base are known as olfactory indicators.

so on keeping the exact in refrigerator it would keep onion extract fresh so that while using it as indicator it work well

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