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Subject :NSO    Class : Class 5

Which of the following methods is used to separate insoluble impurities from water as shown in given figure?

CSedimentation and decantation
DBoth A and B

filteration can also remove insoluble impurities. isnt it?

Ans 1:

Class : Class 9
it needs to be sedimentation and decantation because the insoluble material present in the liquid is quite heavy you only perform filtration when the particles float over the surface of the water

Ans 2:

Class : Class 8
sedimentation and decantation is the answer . but filtration can not come because we can see in the picture itself that the particles are big ,that's why sedimentation and decantation . if the particles are small but yet insoluble , then only it is filtration . I hope that you understood.

Ans 3:

Class : Class 8

Ans 4:

Class : Class 5
Ya, filtration can also remove insoluble impurities but in this case sedimentation and decanation is more appropriate answer.

Ans 5:

Class : Class 8
Yes, but in the given figure it is sedimentation

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