A mixture of NaCI(s) and CaCO3(s) is best separated by

Answer Details

The best method to separate a mixture of NaCl and CaCO₃ is dissolution followed by filtration. This is because NaCl is soluble in water, while CaCO₃ is not. By dissolving the mixture in water, NaCl will dissolve, while CaCO₃ remains undissolved. Filtration can then be used to separate the insoluble CaCO₃ from the solution containing the dissolved NaCl. The other options are not suitable because sublimation is not effective for separating NaCl and CaCO₃, and dissolution followed by crystallization and evaporation will only work for the soluble component (NaCl) and not the insoluble component (CaCO₃).