Question

which method is not used to separate a mixture of sand, water, and salt? evaporation filtration sifting magnetic attraction

Explanation:

To determine which method is not used to separate a mixture of sand, water, and salt, we analyze each option:

• Evaporation: Can be used to separate salt from water (after filtering out sand) by evaporating the water, leaving salt crystals.
• Filtration: Separates sand (insoluble solid) from the salt - water solution (liquid).
• Sifting: Can separate sand (larger particles) from salt (smaller particles) if they are dry, but in the context of a mixture with water, it's not a typical method for this specific mixture, but more importantly, magnetic attraction is completely irrelevant.
• Magnetic attraction: Sand, water, and salt are not magnetic substances. So magnetic attraction cannot be used to separate this mixture.

Answer:

D. Magnetic attraction