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JEE Main Chemistry question

ChemistryAldehydes, Ketones and Carboxylic AcidsJEE Main

Oxalic acid on treatment with conc. H₂SO₄ (warm) gives:

Answer: (B)

Solution

Warming oxalic acid with concentrated H₂SO₄ (which acts as a dehydrating agent) decomposes it into

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Question ID VK-150039