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NEET2011ChemistryBiomoleculesActual

Which one of the following statements is not true regarding (+) lactose?

Options

  1. A(+) lactose is a -glycoside formed by the union of a molecule of D(+) glucose and a molecule of D (+) galactos
  2. B(+) lactose is a reducing sugar and does not exhibit mutarotation
  3. C(+) lactose, C ₁₂ H ₂₂ O ₁₁ contains 8-O H groups
  4. DOn hydrolysis (+) lactose gives equal amount of D (+) glucose and D (+) galactose

Correct answer

B. (+) lactose is a reducing sugar and does not exhibit mutarotation

Step-by-step solution

Lactose is a reducing sugar and all reducing sugars show mutarotation.

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