Q: Carbon dioxide gas, when passed through lime water, brings about which of the following reactions?
(a)CaCO3 + H2O + CO2 → Ca(HCO3)2
(b)Ca(OH)2 + CO2 → CaCO3 + H2O
(c)CaO + CO2 → CaCO3
(d)CaCl2 + H2O + CO2 → CaCO3 + 2HCl
Answer pending verification