An organic compound 'X' having molecular formula `C_(5)H_(10)O` yield phenylhydrazone and gives negative response to the iodoform test and Tollens test . It produces n-pentane on reduction. 'X' could be

Options

A. 3-pentanone
B. n-amyl alcohol
C. pentanal
D. 2-pentanone

Answer

A

Explanation

Since the compound forms a phenylhydrazone, it is a carbonyl compound (contains aldehydic or ketonic group) Since it does not respond to Tollen's reagent test it, is not an aldehyde. Moreover, it does not contain a methyketonic group `(-overset(O)overset(||)(C)-CH_(3))` as it does not give iodoform test. This means that the given compound is `3`-pentanone or pentan-3-one.