Which separation technique will you apply for the separation of the sodium chloride from its solution in water?

Evaporation

The correct answer is option 1. Evaporation.

Out of the choices you provided, the best separation technique for sodium chloride from its solution in water is Evaporation.

Here's why:

Evaporation is a simple and commonly used technique to separate a soluble solid (like sodium chloride) from a liquid (like water). In this process, the water is heated, causing it to evaporate and leave the sodium chloride crystals behind in the container.

Sublimation is a technique used to separate a solid that transforms directly into gas upon heating, without going through a liquid phase. Sodium chloride does not sublimate, so this method wouldn't be suitable.

Filtration is typically used to separate a solid from a liquid mixture where the solid particles are large enough to be trapped by a filter. In a sodium chloride solution, the salt is dissolved in water at the molecular level, so filtration wouldn't be effective.

Chromatography is an advanced technique used to separate complex mixtures of dissolved components. It's not necessary for separating a simple solution like sodium chloride in water.