Question

Loading is a separation method which increases the rate of sedimentation. Justify this statement with suitable example.​

Answer 1

Answer:

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Sedimentation -

Sedimentation is a process of settling down of the heavier particles present in a liquid mixture.

For example -

In a mixture of sand and water, sand settles down at the bottom. This is sedimentation.

Answer 2

Answer:

Loading is the process in which alum

particles are deposited on suspended clay particles of muddy water to make them heavy and settle down rapidly.

Muddy water is a mixture of water and suspended clay particles. The muddy water is taken in a beaker. A big piece of alum is taken and a thread is tied to it. The piece of alum is then put in the beaker of muddy water and rotated in it three or four times by holding from thread. After this piece of alum is taken out from the beaker. When the piece of alum is rotated in muddy water, some of the alum dissolves in water. The particle of dissolved alumn deposit on the suspended clay particles of muddy water in this way the suspended clay particles become loaded with heavy alum particles. Due to this the clay particles become quite heavy and settle down at the bottom of beaker quite rapidly.

When all the suspended clay particles settle down, the water becomes clear. The clear water is then decanted into another beaker. The loaded clay particles remain behind in the first beaker.

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