`1-`Propanol and `2-`propanal can be best distinguished by

Options

A. oxidation with alkaline `KMnO_(4)` followed by reaction with Fehling solution
B. oxidation with acidic dichromate followed by reaction with Fehling solution
C. oxidation by heating with copper followed by reaction with Fehling solution
D. oxidation with concetrated `H_(2)SO_(4)` followed by reaction with Fehling solution

Answer

C

Explanation

Fehling solution is a weak oxidizing agent which can oxidize aliphatic aldehyde but not ketone.
a Primary alcohols undergo oxidation with alkaline `KMnO_(4)`, acidic dichromate qand conc. `H_(2)SO_(4)` to given acids, whereas with `Cu` they give aldehdes.
`underset("Propaol-1")(CH_(3)CH_(2)CH_(2)OH)overset(Cu)underset("heat")rarrunderset(("responds Feshling solution"))underset(Propanol)(CH_(3)CH_(2)CHO)`
`underset("Propaol-2")(CH_(3)CHOHCH_(3))rarr underset(("negative to Feshling solution"))underset("Propanone")(CH_(3)CH_(2)CHO)`