Question

Which one of the following statements is correct?

• A. From a mixed precipitate of AgCl and AgI, ammonia solution dissolves only AgCl.
• B. Ferric ions give a deep green precipitate on adding potassium ferrocyanide.
• C. On boiling a solution having K^+, Ca²⁺ and HCO₃^- ions we get a precipitate of K₂Ca(CO₃)₂.
• D. Manganese salts give a violet borax bead test in the reducing flame.

Hint:

AgCl is soluble in ammonia, AgI is not.

Answer 1

The Correct Option is A

Step 1: AgCl dissolves in NH₃ due to complex formation.
Step 2: AgI does not dissolve in NH₃.