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In which mixture is magnetic separation useful?

Answer and explanation

Correct answer: Iron filings and sulfur

Magnetic separation works when one component of a mixture is attracted by a magnet and the other component is not. Iron is a ferromagnetic substance, so iron filings are pulled toward a magnet, whereas sulfur is non-magnetic and remains behind. A magnet can therefore remove the iron filings from the iron–sulfur mixture, making option A correct. Salt and sugar dissolve in water and cannot be selectively collected with a magnet. Oil and water form separate layers because they are immiscible, so a separating funnel or careful decantation is appropriate instead. The governing concept is the difference in magnetic properties, not merely the fact that the substances are solids or liquids.

Related tags

ChemistryNature-Of-MatterMagnetic-SeparationMixturesNature Of MatterSome Basic Concepts Of ChemistryClass 11 Mcq

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