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Which one of the following does not exhi...

Which one of the following does not exhibit the phenomenon jof mutarotation?

A

(+) Sucrose

B

(+) Lactose

C

(+) Maltose

D

(-) Fructose

Text Solution

Verified by Experts

The correct Answer is:
A
Sucrose does not show mutarotation.
Mutarotation is the phenomenon of change in optical rotation shown by freshly prepared solutions of sugars. However, this property is not exhibited by all sugars. Only those sugars which have a free aldehyde (CHO) ar ketone `(>C=O)` group are capable of showing mutarotation. Sucrose lacks free aldehyde or ketone group and is therefore incapable of showing mutarotation.
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Knowledge Check

  • Which one of the following does not exhibit the phenomenon of mutarotation ?

    A
    (-) Fructose
    B
    (+) Sucrose
    C
    (+) Lactose
    D
    (+) Maltose

  • Which one of the following does not exhibit the phenomenon of mutarotation ?

    A
    `(+)`Sucrose
    B
    `(+)` Lactose
    C
    `(+)` Maltose
    D
    `(-)` Fructose

  • Which of the following does not exhibit a shear ?

    A
    twisting of wire
    B
    increasing in length of wire
    C
    wriggling of washed clothes
    D
    bending of beam

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