Question

Think and write how you will separate a mixture of water, sand, salt and iron filings. You may have to use a method not given in the chapter to separate sand and iron filings. Think−which property of iron can be used for this?

Answer 1

To separate the constituents of the mixture we can use the following steps:

1. The first step is to pass the mixture through a filter paper. This will separate out a mixture of sand and iron filings from the salt solution.
2. Now, pass a magnet over the mixture of sand and iron filings. The iron filings will be attracted to the magnet.
3. Finally, evaporate the salt solution and collect the vapours. Condense the vapour to get water, while salt will be left behind.