A carbonyl compound A having molecular formula `C_(5)H_(10)O` forms crystalline precipitate with sodium bisulpite and gives positive iodoform test. A does not reduce Fehling solution. Identify A.

Explanation

An carbonyl caompound having molecular formula `C_(5)H_(10)O` giving positive iodoform test and does not reduce Fehling solution is 2 - pentanone.
`underset(2-"pentanone")(CH_(3)-CH_(2)-overset((A))(CH_(2)-underset(O)underset(||)(C)-CH_(3)))+NaHSO_(3)tounderset("Pentanone bisulphite")(CH_(3)-CH_(2)-CH_(2)-underset(OH)underset(|)overset(SO_(3)Na)overset(|)(C)-CH_(3)`
`therefore` Compound (A) is 2 - pentanone.