Which acid can be oxidised by Fehling solution :

Malonic acid

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Acetic acid

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Oxalic acid

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Formic acid

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Solution

The correct option is D Formic acid
Formic acid can be oxidized by Fehling solution.

$H C O O H + 2 C u O (Fehlings solution) ⟶ C O_{2} + H_{2} O + C u_{2} O ↓ (Cuprous oxide (reddish brown))$

Hence the correct option is D.

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