Consider the following statements:
Statement-I: All monosaccharides are reducing sugars.
Statement-II: Sucrose can reduce ammoniacal silver nitrate solution.
Choose the correct answer from the options given below.

Statement-I is correct because all monosaccharides contain a free aldehyde or ketonic group in their open-chain structure, which allows them to act as reducing agents. Thus, all monosaccharides are reducing sugars.

Statement-II is incorrect because sucrose is a non-reducing sugar. In sucrose, the two monosaccharide units (glucose and fructose) are held together by a glycosidic linkage between C1 of \(\alpha\)-D-glucose and C2 of \(\beta\)-D-fructose. Since the reducing groups of both glucose and fructose are involved in glycosidic bond formation, sucrose does not have a free aldehyde or ketone group and cannot reduce ammoniacal silver nitrate solution (Tollens' reagent).

Therefore, Statement I is correct but Statement II is incorrect.

Answer: Statement I is correct but Statement II is incorrect