1.

Of the five isomeric hexanes, the isomer which can give two mono chlorinated compounds is

Answer»

n-Hexane
2,3-Dimethylbutane
2,2-Dimethylbutane
2-Methylpentane

Solution :The NUMBER of monohalogenation products obtained of different TYPES of hydrogen it CONTAINS.
`underset("2, 3-dimethylbutane")(H_(3)C-underset(H)underset(|)OVERSET(CH_(3))overset(|)C-underset(H)underset(|)overset(CH_(3))overset(|)C-CH_(3))`
2, 3-dimethylbutane have TWO types of hydrogen atoms. So, on monochlorination gives only two monochlorinated compounds.
`H_(3)C-overset(CH_(3))overset(|)underset(H)underset(|)C-overset(CH_(3))overset(|)underset(H)underset(|)C-CH_(3)overset(Cl_(2))toH_(3)C-underset(H)underset(|)overset(CH_(3))overset(|)C-underset(H)underset(|)overset(CH_(3))overset(|)C-CH_(3)`
`H_(3)C-overset(CH_(3))overset(|)underset(Cl)underset(|)C-underset(H)underset(|)overset(CH_(3))overset(|)C-CH_(3)`


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