Question

Sedimentation does not take place in
which one of the following-
a common salt and water
b chalk and water
c soil and water
d starch and water​

Answer 1

Starch and water answer

Answer 2

Sedimentation does not take place in

(d) starch and water and (a) common salt & water

Justification for the answer:

• Sedimentation: A physical process in which the mixture of a solution and a solute that is not soluble in the solution gets aligned separately. In this process, the particles of the solid solute present in a solution are allowed to settle down separately at the bottom of the solution.

According to the definition of sedimentation option(d) and (a) is correct and others are incorrect as:

• Salt is soluble in water and hence sedimentation is not possible in this solution as salt does not settle down as sediment.
• Similarly, starch is soluble in clean water and hence does not settle down as sediment.
• But, chalk and soil both are solid particles that are insoluble in water and settle down as sediments. This sedimentation is possible in these two mixtures.