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Q.

Which of the following will give positive  Fehling's test ?

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a

HCHO

b

HCOOH

c

glucose

d

fructose

answer is A, B, C, D.

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Detailed Solution

.In basic medium, fructose show keto-enol tautomerism and thus isomerises to glucose due to which it gives positive Tollens and Fehling's reagent test.

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