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Carbon dioxide is identified using which liquid?

Answer and explanation

Correct answer: Lime water

The standard test for carbon dioxide uses lime water, which is an aqueous solution of calcium hydroxide. When carbon dioxide is bubbled through it, calcium carbonate forms and makes the solution milky: CO₂ + Ca(OH)₂ → CaCO₃ + H₂O. Vinegar is acidic, while oil and salt water do not give this characteristic test. Therefore, option A is correct.

Related tags

ScienceClass10Acids-Bases-SaltsCarbon-DioxideLime-WaterAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And Behaviour

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