Which among the following compounds is a hemi | vedclass

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(B) hemiacetal is an organic compound formed by the reaction of an aldehyde or ketone with an alcohol. It is characterized by a central carbon atom bo

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(B) hemiacetal is an organic compound formed by the reaction of an aldehyde or ketone with an alcohol. It is characterized by a central carbon atom bonded to one hydroxyl group $(-OH)$,one alkoxy group $(-OR^{\prime})$,one hydrogen atom $(-H)$,and one alkyl or aryl group $(-R)$.Looking at the options:Option $(A)$ represents a gem-diol.Option $(B)$ represents a hemiacetal,as it contains both an $-OH$ and an $-OR^{\prime}$ group on the same carbon.Option $(C)$ represents an acetal.Option $(D)$ represents an ether.Therefore,the correct structure is $(B)$.

Column-$I$ (Reactions)	Column-$II$ (Reagents)
$(i)$. Benzophenone $\rightarrow$ Diphenylmethane	$(a)$. $LiAlH_4$
$(ii)$. Benzaldehyde $\rightarrow$ $1-$Phenylethanol	$(b)$. $DIBAL-H$
$(iii)$. Cyclohexanone $\rightarrow$ Cyclohexanol	$(c)$. $Zn(Hg) / \text{Conc. } HCl$
$(iv)$. Phenyl benzoate $\rightarrow$ Benzaldehyde	$(d)$. $CH_3MgBr, H_2O$

Which among the following compounds is a hemiacetal?

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