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Statement I: Maltose consists of two alpha-D-glucose units linked via a C1-C4 glycosidic bond (alpha-1,4 linkage), and it is a reducing sugar. Statement II: Maltose consists of one alpha-D-glucose and one beta-D-glucose unit linked at C1 and C6, and it is a non-reducing sugar. Choose the correct option.

1. Both Statement-I and Statement-II are TRUE
2. Both Statement-I and Statement-II are FALSE
3. Statement-I is TRUE but Statement-II is FALSE
4. Statement-I is FALSE but Statement-II is TRUE

Correct answer: Statement-I is TRUE but Statement-II is FALSE

Solution

Maltose is a disaccharide of two alpha-D-glucose units linked by an alpha-1,4 glycosidic bond. The C1 of the second glucose is free, making maltose a reducing sugar. Statement I is correct. Statement II incorrectly states beta-D-glucose, C1-C6 linkage, and non-reducing character.

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