1.

Which of the following is the triad of a homologous series -

Answer»

`CH_(3)NH_(2), (CH_(3))_(2)NH, (CH_(3))_(3)N`
`C_(2)H_(5)OH, (CH_(3))_(2)CHOH`,
`H_(3)C -UNDERSET(CH_(3))underset(|)OVERSET(CH)overset(|)(C)-O-CH_(3)`
`CH_(3)-CH_(2)-underset(O)underset(||)(C)-H`,
`H_(3)C-underset(O)underset(||)(C)-CH_(2)-CH_(3)`,
`H_(3)C-underset(O)underset(||)-CH_(2)-CH_(2)-CH_(3)`
`CH_(2) = CH_(2), CH_(3) - CH = CH_(2)`,
`C_(2)H_(5) -CH = CH_(2)`

Answer :D


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