alleryStart learning →The white precipitate formed when carbon dioxide is passed through lime water is
Acalcium carbonate
Bcalcium chloride
Cmagnesium carbonate
Dsodium bicarbonate
Answer & Solution
Correct answer: A. calcium carbonate
1. Lime water contains calcium hydroxide.
2. Ca(OH)2 + CO2 gives CaCO3 (white, insoluble) + H2O.
3. The white precipitate is calcium carbonate, causing the milkiness.
_Source: AP/TS SCERT Class 10 Physical Science, "Acids, Bases and Salts"_
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