Is it true that the mixture of sand and salt can be separated by sedimentation, decantation filtration and evaporation in the given sequence?

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True

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Detailed Solution

The above statement is true.
Yes, we can separate the mixture of sand and salt by the method of sedimentation, decantation, filtration and evaporation. Firstly for sedimentation, we dissolve this mixture in water. Then the heavier particle, i.e. sand, gets settled in the bottom of the container while salt solution forms at the top. After this, decantation removes a liquid layer from the solid deposited in the solution. So, after the sand settles, we remove the salt water into another beaker. After this, filtration is done to remove any possible impurities of sand particles in the salt solution and finally, evaporation can be done by boiling the salt mixture, which leads to the evaporation of water leaving behind the salt mixture.

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