1.

Among p-diphenylamine (I) p-anisidine (II) and p-toluidine (III), the correct order of decreasing basic strength is

Answer»

`I gt II gt III`
`II gt III gt I`
`I gt III gt II`
`III gt II gt I`.

Solution :
In these SUBSTITUTED anlines the substituents are all electron RELEASING .
`[CH_(3)-underset(CH_(3))underset(|)OVERSET(CH_(3))overset(|)(N)-CH_(2)CH_(3)]^(+) I^(-) underset("Elimination")overset(AgOH)(rarr) (CH_(3))_(3)N+CH_(2)=CH_(2)`


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