The chiral compounds among the following are:

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(A) molecule is chiral if it is non-superimposable on its mirror image. This typically occurs when a carbon atom is bonded to four different groups,kn

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$IV$ and $VI$

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(A) molecule is chiral if it is non-superimposable on its mirror image. This typically occurs when a carbon atom is bonded to four different groups,known as a chiral center.Analyzing the structures:$(I)$ $CH_3-CHCl_2$: The central carbon is bonded to two identical $Cl$ atoms. Achiral.$(II)$ $CH_3-CHCl-CH_3$: The central carbon is bonded to two identical $CH_3$ groups. Achiral.$(III)$ $1-bromo-1-methylcyclohexane$: The carbon at position $1$ is bonded to two identical $CH_2$ groups of the ring. Achiral.$(IV)$ The carbon bonded to $I$ and $CH_3$ is attached to four different groups ($I$,$CH_3$,and two different paths around the ring). Chiral.$(V)$ $CH_3-CH(CH_3)-C_2H_5$: The central carbon is bonded to two identical $CH_3$ groups. Achiral.$(VI)$ $CH_3-CH(Cl)-C_2H_5$: The central carbon is bonded to four different groups ($H$,$CH_3$,$Cl$,$C_2H_5$). Chiral.Thus,$(IV)$ and $(VI)$ are chiral.

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