Which of the following statement (s) is/are incorrect ?

Options

A. Maganess salt give a violet borax head test in reducing flame
B. Form a mixed precipitate of `AgCI` and `AgI` amonia solution dissolve only `AgCI`
C. Ferric ions give a deep green precipitate on adding potassium ferroyanide solution
D. On boling the solution having `K^(Theta),Cu^(2+)` and `HCO_(3)^(Theta)` ions we get a percipitate of `K_(2)Cu(CO_(3))_(2)`

Answer

To determine which statements are incorrect regarding the given options, we will analyze each statement one by one.

### Step 1: Analyze Option A
**Statement:** Manganese salt gives a violet borax bead test in a reducing flame test.

**Analysis:**
- Manganese salts typically produce a colorless bead when subjected to the borax bead test in a reducing flame.
- The statement claims that it gives a violet color, which is incorrect.

**Conclusion:** Option A is incorrect.

### Step 2: Analyze Option B
**Statement:** From mixed salts of AgCl and AgI, ammonia solution dissolves only in case of AgCl.

**Analysis:**
- Silver chloride (AgCl) is soluble in ammonia, while silver iodide (AgI) is not.
- Therefore, when mixed salts of AgCl and AgI are treated with ammonia, only AgCl will dissolve.

**Conclusion:** Option B is correct.

### Step 3: Analyze Option C
**Statement:** Ferric ions give a deep green precipitate on adding potassium ferrocyanide.

**Analysis:**
- Ferric ions (Fe³⁺) react with potassium ferrocyanide (K₄[Fe(CN)₆]) to form a complex known as Prussian blue, which is a deep blue precipitate.
- The statement claims a deep green precipitate, which is incorrect.

**Conclusion:** Option C is incorrect.

### Step 4: Analyze Option D
**Statement:** On boiling the solution of K⁺, Cu²⁺, and HCO₃⁻, we get a precipitate of K₂Cu₂(CO₃)₃.

**Analysis:**
- When K⁺ and Cu²⁺ ions are boiled with bicarbonate (HCO₃⁻), a precipitate of potassium copper carbonate can form.
- The statement is consistent with the expected chemical behavior.

**Conclusion:** Option D is correct.

### Final Conclusion
The incorrect statements are:
- Option A: Manganese salt gives a violet borax bead test in a reducing flame test (incorrect).
- Option C: Ferric ions give a deep green precipitate on adding potassium ferrocyanide (incorrect).

### Summary of Incorrect Options:
- **Incorrect Statements:** A and C

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