HCl was passed through a solution of `CaCl_2, MgCl_2 and NaCl` Which of the following compound(s) crystallise(s) ?

HCl was passed through a solution of CaCl_(2) , MgCl_(2) and NaCl which of the following compound(s) crystallises? (A) Only MgCl_(2) (B) NaCl, MgCl_(2) and CaCl_(2) ] (C) Both MgCl_(2) and CaCl_(2) (D) Only NaCl

When SO_2 is passed through a solution of H_2 S in water :

When SO_2 is passed through a solution of H_2 S in water :

When SO_2 is passed through a solution of H_2S in water

When SO_2 is passed through a solution of H_2S in water

When SO_2 is passed through acidified solution of H_2S