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

Oxalic acid on treatment with conc. H_(2) SO_(4) gives

Oxalic acid on treatment with conc. H_(2) SO_(4) gives

Decomposition of oxalic acid in the presence of conc. H_(2)SO_(4) gives

Oxalic acid reacts with concentrated H_(2)SO_(4) to give a mixture of two gases. When this mixture is passed through caustic potash, one of the gases is absorbed. What is the product formed by the absorbed gas with caustic potash?

Oxalic acid when heated with cone H_2SO_4 . it gives out

Oxalic acid when heated with conc. H_2 SO_4 it gives out

Oxalic acid when heated with conc. H_2 SO_4 it gives out