What happens when excess CO₂ is passed through lime water?

Practice MCQ for SSC, UPSC, RRB Exams

A. The solution becomes more milky A.
B. The milkiness disappears B.
C. A red precipitate forms C.
D. A green gas is released D.

Correct Answer: B সঠিক উত্তর: B

Explanation ব্যাখ্যা

When excess carbon dioxide (CO₂) is passed through lime water (calcium hydroxide solution), the initial milky appearance due to calcium carbonate precipitate disappears. The calcium carbonate dissolves, forming soluble calcium bicarbonate, which results in a clear, colorless solution.

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