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(A) The correct answer is $A$.Oxalic acid $(COOH)_2$ undergoes dehydration when heated with concentrated sulfuric acid $(H_2SO_4)$.The chemical reacti

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$CO, CO_2, H_2O$

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(A) The correct answer is $A$.Oxalic acid $(COOH)_2$ undergoes dehydration when heated with concentrated sulfuric acid $(H_2SO_4)$.The chemical reaction is as follows:$(COOH)_2 \xrightarrow[H_2SO_4]{\Delta} CO + CO_2 + H_2O$Here,concentrated $H_2SO_4$ acts as a dehydrating agent,removing a molecule of water from the oxalic acid,resulting in the formation of carbon monoxide $(CO)$,carbon dioxide $(CO_2)$,and water $(H_2O)$.

The major products obtained in the reaction of oxalic acid with conc. $H_2SO_4$ upon heating are

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