Assertion `:` Sucrose is a non`-` reducing sugar.
Reason `:` It has glycosidic linkage.

Options

A. If both the assertion and reason are true and the reason is the correct explanation of the assertion
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If assertion is false but reason is true.

Answer

A

Explanation

Sucrose is a non`-` reducing sugar as it does not reduce Tollen's or Fehling's reagent, due to absence of free aldehyde of ketone group. It contains stable acetal or ketal structure which cannot be opened into a free carboxyl group.
Sugar is composed of `alpha-D-` glucopyranose unit and `beta-D-`fructofuranose unit. These units are joined by `alpha`, `B-` glycosidic linkage between `C-1` of the glucose unit and `C-2` of the frucose unit.