Which of the following statement are correct ?

Options

A. Anhydrous `MgCl_(2)` cannot be prepared by heating `MgCl_(2).6H_(2)O`
B. Anhydrous `CaCl_(2)` is used in drying gases and organic compounds but not `NH_(3)` or ethyl alcohol due to the formation of `CaCl_(2).8NH_(3)` and `CaCl_(2).4C_(2)H_(5)OH`
C. Leblanc's process is used for preparation of both `Na_(2)CO_(3)` and `K_(2)CO_(3)` but not solvary process.
D. KOH is preferably used compared to NaOH for absorption of `CO_(2)` because `KHCO_(3)` formed is soluble whereas `NaHCO_(3)` is sparingly solugle and therefore, choke the tubes of apparatus used

Answer

A, B, C, D