Test Preparation on s-block Elements-II-Chemistry Test Series For NEET-2020


Chemical A is used for water softening to remove temporary
hardness. A reacts with sodium carbonate to generate caustic
soda. When CO2 is bubbled through a solution of A, it turns
cloudy. What is the chemical formula of A

(a) CaCO3      (b) CaO
(c) Ca(OH)2   (d) Ca(HCO3 )2

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