Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear water was then poured off from the top. The process of separation used in this example is called ______.

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Solution

Sedimentation and decantation.
In sedimentation, the sedimentary rocks or dirt particles are allowed to settle in the bottom of the bucket and then the upper layer of water free from dirt particles and impurities is slowly passed to another beaker. This process is called decantation.

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Question 8 (d)

Fill up the blanks
Impurities settled at the bottom when muddy water was kept overnight in a bucket.
The clear water was then poured off from the top. The process of separation used in this example is called ___.

Q. Fill up the blanks
(a) The method of separating seeds of paddy from its stalks is called ________.
(b) When milk, cooled after boiling, is poured onto a piece of cloth the cream (malai) is left behind on it. This process of separating cream from milk is an example of _________.
(c) Salt is obtained from sea water by the process of __________.
(d) Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear water was then poured off from the top. The process of separation used in this example is called _________.

Q. Fill up the blanks
(a) The method of separating seeds of paddy from its stalks is called ___________.
(b) When milk, cooled after boiling, is poured onto a piece of cloth the cream(malai) is left behind on it. This process of separating cream from milk is an example of ___________.
(c) Salt is obtained from seawater by the process of ___________.
(d) Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear water was then poured off from the top. The process of separation used in this example is called ___________.

Q. Select a suitable word from those given and write it in the space provided:
sieving, winnowing, loading, evaporation, decantation, filtration, condensation, distillation, sedimentation, sublimation
(a) After pounding, rice is separated from its husk by ______________ .
(b) A mixture of stones is allowed to fall through wire nets in order to separate them according to different sizes. This is a process of ______________ .
(c) When muddy water is kept overnight in a bucket, the clear water can be poured off from the top, next morning. This is a process of ________________ .
(d) Chilled milk is poured through a muslin cloth to remove the layer of cream. This is a process of _____________ .
(e) Salt is obtained from sea water by _____________ .
(f) Solid iodine can be separated from sand by ____________ .
(g) _____________ is used to separate immiscible liquids.
(h) The process of settling down of heavy solid particles at the bottom of a container coantaining a mixture of a liquid and an insoluble solid is _______________ .

Q. Muddy water contains heavier particles like sand and soil. The heavier soil and sand particles settle down. And the clear upper water is poured out from the container.
What is the process involved in this example?

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Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear water was then poured off from the top. The process of separation used in this example is called ______.

Sedimentation and decantation.In sedimentation, the sedimentary rocks or dirt particles are allowed to settle in the bottom of the bucket and then the upper layer of water free from dirt particles and impurities is slowly passed to another beaker. This process is called decantation.

Sedimentation and decantation.
In sedimentation, the sedimentary rocks or dirt particles are allowed to settle in the bottom of the bucket and then the upper layer of water free from dirt particles and impurities is slowly passed to another beaker. This process is called decantation.