Sucrose contains which of the following group | vedclass

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(D) Sucrose is a disaccharide formed by the condensation of $\alpha-D-glucose$ and $\beta-D-fructose$. In the structure of sucrose,the glucose unit is

Vedclass · Accepted Answer

None of these

Vedclass · Answer

(D) Sucrose is a disaccharide formed by the condensation of $\alpha-D-glucose$ and $\beta-D-fructose$. In the structure of sucrose,the glucose unit is in the pyranose form (containing a hemiacetal group) and the fructose unit is in the furanose form (containing a hemiketal group). However,in the disaccharide linkage,the glycosidic bond is formed between the anomeric carbons of both monosaccharides. Therefore,sucrose does not contain a free aldehydic $(-CHO)$ or free ketonic $(>C=O)$ group in its open-chain form,as both are involved in the glycosidic linkage. Thus,the correct answer is $(d)$.

Sucrose contains which of the following groups?

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