Question

19 Adouble salt which contains fourth period alkali metal (A) on heating at 500K gives (B).
aqueous solution of (B) gives white precipitate with BaCl and gives a red colour compound
with alizanin. Identify A and B.​

Answer 1

19 Adouble salt which contains fourth period alkali metal (A) on heating at 500k gives(B)...............