Question

Which is the correct order to separate salt from a mixture of salt and sand?
A. Dissolving, Filtration, Evaporation
B. Filtration, Dissolution, Evaporation
C. Filtration, Evaporation, Dissolution
D. Evaporation, Dissolution, Filtration

Answer 1

Hint: In nature, the substances exist as pure substances or in the form of mixtures. When two or more substances mix they form a mixture. The mixtures can be homogeneous and nonhomogeneous based on the properties of the intermixing substances. The mixture can be separated based on the properties that the mixture shows.

Complete step by step answer:
The substances either exist as pure matter or in the form of substance. The properties of the final mixture and the intermixing substance decide how the mixture can be processed.
The substance in the small quantity is the solute while the substance in the larger quantity is the solvent. After the formation of the mixture, there are various methods for the separation of the mixtures to retrieve the original substances which were used for the formation of the mixture.
Every separation method has a specific principle and works to do. So to separate a different mixture of substances the process must be followed in a specific manner.
For the separation of salt from the mixture of salt and sand, we may follow the specific methods in the same order
Firstly we may dissolve the salt in water and filter out the water. Since salt is soluble in water and the sand isn’t so the separation will be completed in this step.
For retrieving the salt separated we then evaporate the salt solution which then leaves the salt behind after evaporating the water.

So, the correct answer is Option A .

Note: The separation process is based on the difference in the way in which the substituent substances react to the separation method. There are various methods for the separation of the mixture ranging from the physical methods of sieving, winnowing to the chemical methods of fractional distillation.