Which of the following statements is `//` are correct ?

Options

A. The reductive and ocidative oxonolyses or `m-` and `p-` xylens give the same product.
B. The reductive ozonolysis of `o-`xylene `(1,2-`dimethyl benzene `)` gives glyoxal `+` methyglyoxal in `3:2:1` ratio.
C. The ozonolysis of `o-`xylene establishes the Kekule's structure of benzene and also proves the existence of resonance in benzene.
D. The oxidation of benzene with acidic `KMnO_(4)` gives `3 mol` oxalic acid.

Answer

a,b,c

Explanation

Statement `(d)` is false. Due to delocalisation of `pi bar(e) s,` benzene neigther undergoes oxidation nor it gives test for unsatureation, `i.e.,` Baeyer's reagent test and ecolourisation of `Br_(2)` solution.