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Question

Butter Is Separated From Milk by (a) Sedimentation (B) Filtration (C) Churning (D) Decantation


A

(a) Sedimentation.

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B

(B) Filtration.

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C

(C) Churning.

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D

(D) Decantation.

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Solution

The correct option is C

(C) Churning.


Explanation of correct option

(C) Churning:

  • It is a process to separate solute particle which is suspended in the solvent.
  • For example, In this method, milk is rotated at a high speed in a machine, a centrifugal force act on the lighter particle, and they get separated from the mixture. This method is also known as centrifugation. Mixtures like cream from milk and butter from milk are separated by this method.

Explanation of incorrect option.

a) Sedimentation:

  • It is a process of separation by which heavier impurities present in liquid normally water settle down at the bottom of the container containing the mixture. The process takes some amount of time. For example, sand in water, and chalk powder in water.

b) Filtration

  • It is a separation method, in which separation is done based on the size of particles, in this method, the mixture is allowed to pass through a filter paper. Particles whose size is large than the pores of filter paper get collected on the filter paper. For example, sand in water, and chalk powder in water.

D) Decantation:

  • .It is defined as the separation process in which two immiscible liquids are separated. This is done by pouring out the clear upper layer of liquid. The separation of a mixture of oil from water is an example of decantation.

Hence. option (C) is correct.


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