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Glucose on Fehling’s test gives ______(a) no reaction(b) silver mirror(c) red precipitate(d) pungent gasThe question was posed to me during an interview.I want to ask this question from Biomolecules Carbohydrates topic in section Biomolecules of Chemistry – Class 12

Answer»

The correct option is (c) red PRECIPITATE

Easy EXPLANATION: Since glucose is readily oxidised, it acts as a strong reducing agent and reduces Fehling’s reagent to form a carboxylate compound (in the place of CHO group which gets oxidised) ALONG with a red precipitate of Cu2O.



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