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In the previous module, we discussed different kinds of mixtures. Many of these mixtures are found in Nature. Sometimes, it is useful to separate the different components of a mixture.
Sea water contains salt in it. Salt is a very important ingredient in cooking. How can we separate the salt from sea water?
  • Cool the sea water and get salt crystals
  • Heat the sea water and let the water evaporate
  • Put a magnet in the sea water and all the salt sticks to the magnet
  • None of the above. Salt can only be separated by adding chemicals.