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Enumerate the reactions of D-glucose whi...

Enumerate the reactions of D-glucose which cannot be explained by its open chain structure.

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(1) D-glucose does not form `NaHSO_(3)` additional product, aldehyde ammonia adduct, 2, 4-DNP derivative and does not respond to Schiff's reagent test.
(2) When dissolved in aqueous solution, both `alpha`-D-glucose exhibit the phenomenon of mutarotation.
(3) Glucose reacts with `NH_(2)OH` to form an oxime but pentaacetyl derivative of glucose does not react with `NH_(2)OH`.
(4) D-glucose reacts with methanol in presence of dry HCl gas to form two isomeric methyl-D-glucosides.
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Knowledge Check

  • Which cannot be explained by Lamarckism

    A
    Loss of tail by humans
    B
    Elongation of neck in giraffe
    C
    weak progeny of a Nobel laureate
    D
    none of the above
  • Which of the following reactions of glucose can be explained only by its cyclic structure

    A
    glucose forms pentaacetate
    B
    glucose reacts with hydroxylamine to form an oxime
    C
    pentaacetate of glucose does not react with hydroxylamine
    D
    glucose is oxidised by nitric acid to gluconic acid
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