a mixture of common salt, sulphur, sand and iron filings is shaken with carbon disulphide and filtered through a filter paper. the filtrate is evaporated to dryness in a china dish. what will be left in the dish after evaporation?

When a mixture of common salt, sulphur, sand, and iron filings is shaken with carbon disulphide and then filtered:

• Sulphur is soluble in carbon disulphide, so it dissolves in the solvent.
• Common salt, sand, and iron filings are insoluble in carbon disulphide and remain as solid residue on the filter paper.

After filtration, the filtrate contains dissolved sulphur in carbon disulphide. When this filtrate is evaporated to dryness in a china dish, the carbon disulphide evaporates, leaving behind pure sulphur. Therefore, after evaporation, sulphur will be left in the china dish while common salt, sand, and iron filings remain on the filter paper