Why is benzaldehyde not oxidized by Fehling solution?

Aldeydes can be oxidized by

An aldehyde on oxidation gives

A substance A containing three carbon atoms gives white crystalline precipitate with sodium bisulphite solution . but does not give red precipitate with Fehling solution. A on treatment with NH_2-NH_2//KOH will yield.

Isobutyraldehyde on oxidation gives

Benzaldehyde is obtained from tolune by

Give Reason: Aldehydes are easily oxidized by mild oxidizing agents, but not ketones.

Benzaldehyde undergoes oxidation and reduction in the presence of

When KMnO_4 is reduced with oxalic acid in acidic solution, the oxidation number of Mn changes from______________.

What is oxidative phosphorylation?

A compound 'X' has the formula C_2Cl_3OH . It give a red precipitate of Cu_2O with Fehling solution. Then 'X' is