Which of the following does not reduce Fehlin | vedclass

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(D) Fehling's solution is an oxidizing agent used to detect the presence of reducing sugars and aliphatic aldehydes.$1$. Glucose is a reducing sugar c

Vedclass · Accepted Answer

Both $(B)$ and $(C)$

Vedclass · Answer

(D) Fehling's solution is an oxidizing agent used to detect the presence of reducing sugars and aliphatic aldehydes.$1$. Glucose is a reducing sugar containing a free hemiacetal group,so it reduces Fehling's solution.$2$. Benzaldehyde is an aromatic aldehyde. Aromatic aldehydes do not reduce Fehling's solution.$3$. Sucrose is a non-reducing disaccharide because its glycosidic linkage involves the anomeric carbons of both glucose and fructose,preventing the formation of a free aldehyde or ketone group. Therefore,it does not reduce Fehling's solution.Since both Benzaldehyde and Sucrose do not reduce Fehling's solution,the correct option is $(D)$.

Item $I$ (compound)	Item $II$ (reagent)
$(a)$ Lysine	$(p)$ $1$-naphthol
$(b)$ Furfural	$(q)$ Ninhydrin
$(c)$ Benzyl alcohol	$(r)$ $KMnO_4$
$(d)$ Styrene	$(s)$ Ceric ammonium nitrate

Which of the following does not reduce Fehling's solution?

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The correct match between item $I$ and item $II$ is

Item $I$ (compound) Item $II$ (reagent)

$(a)$ Lysine $(p)$ $1$-naphthol

$(b)$ Furfural $(q)$ Ninhydrin

$(c)$ Benzyl alcohol $(r)$ $KMnO_4$

$(d)$ Styrene $(s)$ Ceric ammonium nitrate

Pick out the wrong combination.

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