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Question

Presence of unsaturation in organic compounds can be tested with:

A
Fehling's reagent
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B
Tollens' reagent
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C
Baeyer's reagent
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D
Fittig's reaction.
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Solution

The correct option is B Baeyer's reagent
Baeyer's reagent (alk.KMnO4) which is pink in colour decolourises due to the presence of unsaturation.
Thus, it shows the presence of unsaturation in an organic compound.

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