1.

Which of the following is most likely to show optical isomerism

Answer»

`{:(""H),("|"),(HC-=C-C-C-=CH),("|"),(""Cl):}`
`{:(""H),("|"),(HC-=C-C-C-CH_(3)),("|"),(""Cl):}`
`{:(""H),("|"),(HC-=C-C-H),("|"),(""Cl):}`
`{:(""Cl),("|"),(HC-=C-C=CH_(2)):}`

Solution :`HC -= C-underset(Cl)underset(|)OVERSET(H)overset(|)(C)-CH_(3)` shows optical because ONE MOLECULE is unsymmetrical. That is called chiral CENTRE.


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