Which one of the following on oxidation will not give a carboxylic acid with the same number of carbon atoms ?

Options

A. `CH_(3)CH_(2)CHO`
B. `CH_(3)CHO`
C. `CH_(3)COCH_(3)`
D. `HCHO`

Answer

C

Explanation

`underset(" 3 carbon")(CH_(3)-overset(O)overset(||)(C)-CH_(3))+4[O]underset(+dil. H_(2)SO_(4))overset(K_(2)Cr_(2)O_(7))(rarr) underset("2 carbon")(CH_(3)-overset(O)overset(||)(C)-OH)+H_(2)O+CO_(2)`