Sodium Fusion Extract:
Sodium cyanide, sulphide, and halide (-CN, -S, and -H) are organic compounds that can be obtained by performing a sodium fusion test. The sodium fusion test involves heating the organic compound with sodium metal to form a fused mass. The next step in the process is to extract the formed compounds from the fused mass by boiling it with distilled water. This extraction process is commonly known as the "sodium fusion extract."

Process of Sodium Fusion Extract:
The process of sodium fusion extract involves the following steps:

1. Sodium Fusion: The organic compound is mixed with sodium metal and heated to form a fused mass. During this process, the sodium reacts with the organic compound, resulting in the formation of various compounds such as sodium cyanide, sulphide, and halide.

2. Boiling with Distilled Water: The fused mass obtained from the sodium fusion is then boiled with distilled water. Boiling the fused mass with water helps in extracting the formed compounds from the mass.

3. Extraction of Compounds: As the fused mass is boiled with distilled water, the water molecules help in dissolving the formed compounds like sodium cyanide, sulphide, and halide. These compounds are extracted from the fused mass and dissolve in the water.

4. Filtration: After boiling, the mixture of water and dissolved compounds is filtered to separate the extracted compounds from any undissolved impurities or solid residues.

5. Sodium Fusion Extract: The filtrate obtained from the filtration process contains the extracted compounds, i.e., sodium cyanide, sulphide, and halide. This solution is commonly referred to as the sodium fusion extract.

Significance of Sodium Fusion Extract:
The sodium fusion extract is crucial in qualitative analysis as it helps identify and confirm the presence of certain functional groups in organic compounds. The extracted compounds, such as sodium cyanide, sulphide, and halide, can be further subjected to specific chemical tests to determine the nature and characteristics of the organic compound under investigation.

Conclusion:
In conclusion, the boiling of the fused mass obtained from sodium fusion with distilled water helps in the extraction of compounds like sodium cyanide, sulphide, and halide. This process is known as the sodium fusion extract and is significant in qualitative analysis for identifying the presence of specific functional groups in organic compounds.