Jenny has a mixture of sand, sugar, common salt, and milk powder. She adds some water to the mixture. Which of these can be separated easily from the mixture after adding water?

Sand

Sand can be separated easily from the mixture after adding water. Sand does not mix with water unlike sugar, common salt, and milk powder. Sand settles down like precipitates because it cannot float or dissolve like the others. Decantation technique can be used to separate sand from the mixture.