Question

Identify the mixture which cannot be separated using sedimentation.

• A. Sand in water
• B. Chalk powder in water
• C. Sugar in water
• D. Chia seeds in water

Answer 1

The correct option is C Sugar in water

Sedimentation is a separation technique to separate insoluble solid-liquid mixtures. In this process, the mixture is left undisturbed for some time. The heavier component of the mixture settles down while the lighter component stays afloat.

Amongst the given options, sugar in water cannot be separated using sedimentation. This is because it is a solid-liquid mixture where the solid is completely soluble in water. So, sugar will not settle down even after keeping the mixture undisturbed for a long time.