Which of the following statement is correct ?

Options

A. `Fe^(3)` give a deep green ppt. on adding `K_(4)[Fe(CN)_(6)]` solution
B. On boiling a solution having `K^(+), Ca^(2+)` and `HCO_(3)^(-)` ions, we get a precipitate of `K_(2) [Co(CO_(3))_(2)]`
C. Manganese salts gives a violet borax bead test in reducing flame
D. From a mixed precipitate of AgCl and Agl, ammonia solution dissolves only AgCl

Explanation

To determine which statement is correct, let's analyze each statement provided in the question step by step.

### Step 1: Analyze the Statements
1. **Statement 1**: "Fe³⁺ gives a deep blue precipitate on addition of K₄[Fe(CN)₆] solution."
- This statement is incorrect. The addition of K₄[Fe(CN)₆] to Fe³⁺ ions produces a blue precipitate known as Prussian Blue, but it is not a deep blue precipitate.

2. **Statement 2**: "On boiling a solution having K⁺, Ca²⁺, and bicarbonate ion, we will get a precipitate of K₂CO₃."
- This statement is also incorrect. When bicarbonate ions are boiled, they decompose to form carbon dioxide and water, and K₂CO₃ does not precipitate out.

3. **Statement 3**: "Manganese salts give a violet borax bead test in a reducing flame."
- This statement is incorrect. Manganese salts give a gray borax bead test in a reducing flame, not violet.

4. **Statement 4**: "From a mixed precipitate of AgCl and AgI, ammonia solution dissolves only AgCl."
- This statement is correct. Ammonia can dissolve AgCl to form a complex ion (Ag(NH₃)₂⁺), while AgI remains insoluble.

### Conclusion
The correct statement is **Statement 4**: "From a mixed precipitate of AgCl and AgI, ammonia solution dissolves only AgCl."

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