Write the structures of the isomers of alcohols with molecular formula `C_(4)H_(10)O` Which of these exhibits optical acitvity ?

Explanation

(i) `CH_(3)-underset("Butan-1-ol")(CH_(2))-CH_(2)-CH_(2)-OH` (ii) `CH_(3) -underset(2 - "Methylpropan" -1 -"ol")underset(CH_(3))underset(|)(CH) - CH_(2)-OH` (iii) `CH_(3) -underset("Buttan-2-ol"("optically active"))underset(OH)underset(|)overset(**)(CH)-CH_(3)` (iv) `CH_(3)-underset(2-"Methyopropan"-2-ol)underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-OH`