Question

Muddy water can be separated by:

• A. Sedimentation
• B. Winnowing
• C. Evaporation

Answer 1

The correct option is A

Sedimentation

Explanation for correct option:

Option A

Sedimentation:

• Sedimentation is the method that is used to separate a solid-liquid mixture.
• In this method, the mixture is allowed to stand.
• The solid particles settle down, are called the sediments and the clear liquid above the sediments is called the supernatant.
• For example a mixture of sand and water, muddy water, etc.

Therefore, option A is correct.

Explanation for incorrect option:

Option B

Winnowing :

• Winnowing is the method used to separate the solid-solid mixture.
• It is a method that is used to separate the husk from grains.
• The mixture is allowed to fall from a height in the form of a spray.
• The lighter particles fall far away while heavier grains fall on the surface of the earth.

Therefore, option B is incorrect.

Option C

Evaporation:

• In this process water evaporates from the liquid surface and changes into water vapors by the action of heat.
• Salt is prepared from seawater using this method.

Therefore, option C is incorrect.

Option C

Sieving:

• Sieving is the method used to separate the solid-solid mixture of different size particles.
• This method is usually preferred when the components are of different sizes.

Therefore, option D is incorrect.