NEET Chemistry (general) MCQ Question
Which of the following statements about disaccharides and polysaccharides is correct?
Disaccharides are formed by the linkage of two monosaccharides through glycosidic bonds while polysaccharides are long chains of monosaccharides.
All disaccharides are reducing sugars, regardless of their structure.
Polysaccharides do not serve any storage function in plants.
Sucrose is a reducing sugar because it can release a free aldehyde group.
Correct Answer
Detailed Explanation
Statement A is correct as disaccharides are indeed formed by glycosidic linkages between monosaccharides, while polysaccharides consist of many such units. Statement B is incorrect as not all disaccharides are reducing sugars; for example, sucrose is non-reducing. Statement C is false because polysaccharides like starch serve as storage materials. Statement D is incorrect since sucrose does not produce a free aldehyde group.
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