Which one of the following statements is not true regarding \( (+) \) lactose? [AIPMT (Prelims) ...

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Which one of the following statements is not true regarding \( (+) \) lactose?
[AIPMT (Prelims) 2011]
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(a) On hydrolysis (+) lactose gives equal amount of \( D(+)- \)
W glucose and \( D(+) \)-galactose
(b) (+) Lactose is a \( \beta \)-glucoside formed by the union of a molecule of \( D(+) \)-glucose and a molecule of \( D(+) \) galactose
(c) \( (+) \) Lactose is a reducing sugar and does not exhibit mutarotation
(d) (+) Lactose, \( \mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11} \) contains 8-- 8 groups
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