. Lime water turns milky when .............. gas is passed through it
Lime water turns milky when .............. gas is passed through it
(a) Carbon dioxide
(b) Hydrogen
(c) Oxygen
(d) Nitrogen dioxide
Best Answer
Ans. (a) Lime water turns milky when carbon dioxide gas is passed through it
calcium hydroxide + Carbon dioxide → Calcium Carbonate + Water
Ca(OH)2 CO2 CaCO3 (milky) H2O
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