Question:
A chemical A is used for the preparation of washing soda to recover ammonia.
When CO2 is bubbled through an aqueous solution of A, the solution turns
milky. It is used in whitewashing due to disinfectant nature. What is the
the chemical formula of A?
(i) Ca (HCO3)2
(ii) Cao
(iii) Ca(OH)2
(iv) CaCO3
Solution:
Option (iii) Ca(OH)2 is the answer.
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