In Lassaigne's test, if the organic compound contains both N and S and it is fused with excess sodium metal, the sodium fusion extract will contain

Options

A. NaCNS
B. NaCN
C. `Na_(2)S`
D. Both (b) and (C)

Explanation

To solve the question regarding Lassaigne's test when an organic compound contains both nitrogen (N) and sulfur (S) and is fused with excess sodium metal, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Lassaigne's Test**:
- Lassaigne's test is used to detect the presence of halogens, nitrogen, and sulfur in organic compounds. When an organic compound is fused with sodium, it forms sodium salts of the elements present in the compound.

2. **Fusion with Sodium**:
- When an organic compound containing nitrogen and sulfur is fused with excess sodium metal, the sodium reacts with these elements to form sodium compounds.

3. **Formation of Sodium Compounds**:
- The nitrogen in the organic compound will react with sodium to form sodium cyanide (NaCN).
- The sulfur in the organic compound will react with sodium to form sodium sulfide (Na2S).

4. **Resulting Sodium Fusion Extract**:
- Since both nitrogen and sulfur are present in the organic compound, the sodium fusion extract will contain both NaCN and Na2S.

5. **Conclusion**:
- Therefore, the sodium fusion extract will contain both sodium cyanide (NaCN) and sodium sulfide (Na2S).

### Final Answer:
The sodium fusion extract will contain both NaCN and Na2S.