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Formalin gives a positive Fehling's solution test.

Q: Does formalin give positive Fehling's solution test?

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Formalin gives a positive Fehling's solution test.

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No, Fehling's Test will have no reaction with Formic Acid

HCOOH + 2CuSO4 + 4NaOh ---> no Reaction

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No. Fehling's test is positive for glucose which forms gluconic acid as the product.

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Starch doesnot give positive result for Fehling's test as it does not have a free hemiacetal group

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Fehling's test is used to differentiate between aldehyde and ketones group. An aldehyde group will react with Fehling's reagent to give cuprous oxide resulting in a red precipitate. A Ketone group will not react with Fehling's reagent.

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