Find out total number of coloured compound(s) from following:
`BaCO_(3),HgO,PbSO_(4),Ag_(2)S,HgI_(2),PbO,CdS,AgNO_(2),PbCrO_(4)`

Answer

To determine the total number of colored compounds from the given list, we will analyze each compound for its color. Here’s the step-by-step solution:

### Step 1: List the Compounds
We have the following compounds to analyze:
1. BaCO₃ (Barium Carbonate)
2. HgO (Mercury Oxide)
3. PbSO₄ (Lead Sulfate)
4. Ag₂S (Silver Sulfide)
5. HgI₂ (Mercury Iodide)
6. PbO (Lead Oxide)
7. CdS (Cadmium Sulfide)
8. AgNO₂ (Silver Nitrite)
9. PbCrO₄ (Lead Chromate)

### Step 2: Identify the Color of Each Compound
Now, we will identify the color of each compound:

1. **BaCO₃**: White
2. **HgO**: Orange or Red
3. **PbSO₄**: White
4. **Ag₂S**: Black
5. **HgI₂**: Orange or Red
6. **PbO**: Orange
7. **CdS**: Yellow
8. **AgNO₂**: Colorless
9. **PbCrO₄**: Yellow

### Step 3: Count the Colored Compounds
Now, we will count the compounds that have color:

- **Colored Compounds**:
- HgO (Orange or Red)
- Ag₂S (Black)
- HgI₂ (Orange or Red)
- PbO (Orange)
- CdS (Yellow)
- PbCrO₄ (Yellow)

### Step 4: Total Count
From the analysis, the colored compounds are:
1. HgO
2. Ag₂S
3. HgI₂
4. PbO
5. CdS
6. PbCrO₄

Thus, the total number of colored compounds is **6**.

### Final Answer
The total number of colored compounds from the given list is **6**.

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