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Both glucose and fructose are reducing s...

Both glucose and fructose are reducing sugars but sucrose is non reducing in nature. Why?

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The correct Answer is:
Glucose & fructose
In aq. Solution these sacc. Containing hemiacetal or hemiketals exits in equal. With a small amount of open chain aldehyde or `alpha-`hydroxy ketonic form and when treated with reagents, open chain form oxidize. In sucrose reducing part are not free and are involve in glycosidic linkage.
`(##RES_ORG_CHM_V02_XII_C04_E01_262_A01##)`.
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Knowledge Check

  • Non reducing sugars have

    A
    free CHO group and free CO group
    B
    neither free CO nor free CHO group
    C
    free CHO and bound CO group
    D
    free CO group and bound CHO group.

  • Sucrose is not a reducing sugar since.

    A
    it is chemically stable
    B
    it contains no free aldehyde or keto group adjacent to `gt CHOH `group
    C
    it is built up of a fructose unit
    D
    it is optically active.

  • Sucrose is not a reducing sugar since

    A
    it conains no free aldehyde or keto group adjacent to a group
    B
    it is built up of a fructose unit
    C
    it is optically active
    D
    it is chemically stable

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