Gouri Shankar posted an Question
February 21, 2021 • 19:03 pm 30 points
  • IIT JAM
  • Chemistry (CY)

Q6 the functional group(s) in reducing sugar that tests positive with tollen's reagent is (are) options. ketone 2 hemi-acetal 3 aldehyde 4 acetal

Q6 The functional group(s) in reducing sugar that tests positive with Tollen's reagent is (are) Options. Ketone 2 Hemi-acetal 3 Aldehyde 4 Acetal

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  • Amol ashok pawar best-answer

    Answer is 3 aldehydes As reducing sugars contain aldehydes as functional groups and tollens reagent gives positive test for it(silver mirror test)

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    Dinesh khalmaniya 1 best-answer

    option 2 and 3 Explanation- Hemiacetal and hemiketal group due to the presence of alpha hydroxyl group gives positive test for Fehling’s or Tollen’s test. Whereas, Acetal and Ketal group does not show positive test.

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    in reducing sugar ketone will also gives +tollens test

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    Priyanshu kumar

    Aldehyde and hemi acetal

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    in reducing sugar ketone will also gives +tollens test

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    See any sugar containing hemi acetal group is reducing sugar. Aldehyde group presence also gives positive test with tollens reagent.

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    yes alpha hydroxy ketone gives positive tollens test

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    what is given in answer?

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    Sir why not answer ketone? a sugar having keto group also has alfa Hydroxyl group?

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