An alcohol of unknown structure gave a positive Lucas test in about five minutes. When alcohol was heated with concentrated `H_(2)SO_(4)` an alkene was formed with the formula `C_(4)H_(8)`. Ozonolysis of this alkene gave a single product, `C_(2)H_(4)O`. What was the structure of the alcohol ?

Options

A. butan-1-ol
B. butan-2-ol
C. 2-methylpropan-1-ol
D. 2,2-dimethylbutan-1-ol

Answer

B

Explanation

`underset("Butan-2-ol")underset((X))underset("OH")underset("|")(CH_(3)-CHCH_(2)CH_(3))overset(conc. H_(2)SO_(4))underset(Delta)rarr underset((C_(2)H_(4)O))underset(CH_(3)CHO+CH_(3)CHO)underset(darr" Ozonolysis")underset(Y (C_(4)H_(8)))(CH_(3)CH=CHCH_(3))`