Biomolecules

Short Answer Type

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Explain the following:
Glucosides react neither with Fehling solution nor with Tollen's reagent. They also do not allow mutarotation.

Glucoside are stable in aqueous solution used in mutarotation and also in the basic Fehling’s and Tollen's solution. Hence open chain aldehydic form is not produced.
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    Explain the following:
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    Long Answer Type

    What happens when D-glucose is treated with following reagents?
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    (ii) Hydroxylamine
    (iii) Tollen’s reagents              
    (iv) Fehling solution
    (v) Phenyl hydrazine.
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    Short Answer Type

    Explain the following:
    Although fructose does not have an aldehydic group, it reacts with Fehling solution.

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