question 7. a science student prepares a mixture of water and sand in a beaker. after leaving the mixture…

question 7. a science student prepares a mixture of water and sand in a beaker. after leaving the mixture undisturbed for a few minutes, the sand settles to the bottom. the student carefully tilts the beaker and pours the clear water into another container, leaving the sand behind.\nfiltration\ndecantation\nchromatography\ndistillation

question 7. a science student prepares a mixture of water and sand in a beaker. after leaving the mixture undisturbed for a few minutes, the sand settles to the bottom. the student carefully tilts the beaker and pours the clear water into another container, leaving the sand behind.\nfiltration\ndecantation\nchromatography\ndistillation

Answer

Brief Explanations:

Filtration involves passing a mixture through a filter medium. Chromatography separates components based on their different affinities for a stationary and mobile phase. Distillation separates based on differences in boiling - points. Decantation is the process of carefully pouring off a liquid layer from a solid - liquid mixture without disturbing the solid at the bottom. The student's action of pouring off clear water leaving sand behind is decantation.

Answer:

B. Decantation