1.

Iso-butyl bromide reacts with aq. KOH gives

Answer»

iso-butyl alcohol
t-butyl alcohol
n-butyl alcohol
sec. butyl alcohol

Solution :Iso butyl BROMIDE produced iso-butyl cation on heterolysis, it is `1^(@)` carbocation (less STABLE) rearrange to form `3^(@)` carbocation (more stable). Attack of `OH^(-)` on 1-carbocation gives t-butyl alcohol not-iso-butyl alcoho.
`CH_(3)- OVERSET(CH_(3)) overset(|)(CH)-CH_(2)-Broverset( "heterolysis") to underset(1^(@)"carbo-cation")(CH_(3)- overset(CH_(3)) overset(|)C-)CH_(3) overset("rearrangment")to underset(3^(@)"carbo-cation") (CH_(3)-overset(CH_(3)) overset(|)(C^(o+))-C-CH_(3))overset(OH^(-)) to underset("t-butyl alcohol") underset(OH) underset(|) overset(H_(3)) overset(|)(CH_(3)-C-CH_(3))`


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