Is it true that a mixture of common salt, sand, and iron filings can be separated using the method of magnetic separation only?

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True

False

answer is B.

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Detailed Solution

The above statement is false.
Common salt, sand, and iron filings will first be separated by using a magnet, as iron filings will be attracted to the magnet, leaving behind salt and sand. The water will then be added to that mixture. Salt will dissolve in that water, and sand will be suspended in the salt solution, which can be separated by using filter paper. Sand will be left behind on the paper while the salt solution will pass through it. The salt can be obtained by evaporating the water, leaving behind the salt. Hence, all three components are separated.
The correct statement would be, a mixture of common salt, sand, and iron filings can be separated using the methods of magnetic separation, filtration, and evaporation.

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