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MCQMediumJEE Main 2026 · 28 January, Shift 1Carboxylic Acids

Chemistry Question from JEE Main 2026 · 28 January, Shift 1

Consider the following reaction sequence:

Reaction scheme showing compound x converting to compound y using CO2 and NaOH at 120°C under high pressure, followed by H3O+, with notes that x has 76.6% C, 6.38% H, vapour density 47, and y is the major product.

Given: Compound xx has percentage composition 76.6% C76.6\%\ C, 6.38% H6.38\%\ H and vapour density =47=47. Compound yy develops a characteristic colour with neutral FeCl3\mathrm{FeCl_3} solution. Identify the INCORRECT statement.

  • A

    Compound yy will dissolve in NaHCO3\mathrm{NaHCO_3} and evolve a gas.

  • B

    Both compounds xx and yy will burn with sooty flame.

  • C

    Compound xx is more acidic than compound yy.

  • D

    Both compounds xx and yy will dissolve in NaOH\mathrm{NaOH}.

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