Question

5. Which one of the following pairs of separating techniques will BOTH separate sand from a mixture of salt and water?
(a) decantation and filtration
(b) chromatography and evaporation
(c) distillation and evaporation
(d) decantation and distillation​

Answer 1

Answer:

Correct option is

B

decantation and evaporation

You can separate a mixture of sand, salt and water by decantation and evaporation. Decantation will separate sand from salt and water. Sand remains in the original vessel, whereas salt and water is transfered to new vessel. Evaporation will separate salt from water. Water is evaporated and salt is left behind.

Answer 2

Answer:

As common salt and water are miscible while sand is not soluble in solution. So the first filtration is used to separate sand then evaporation is used to separate salt and water.

Explanation:

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