1.

Oxalic acid when reduced with zinc and H_(2)SO_(4) gives

Answer»

Glyoxallic acid
Glyoxal
Glycollic acid
Glycol

Solution :`{:(COOH,),("|",),(underset("Oxalic acid")(COOH),):}+4[H]underset(H_(2)SO_(4))overset(ZN)to {:(CH_(3)OH,),("|",),(underset("Glycollic")(COOH),):}+H_(2)O`


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