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Subject :NSO    Class : Class 4

Read the given statements regarding different methods (U, V, W and X) of purification of water and identify them.
(i) Methods U and V are together used to separate mud from muddy water.
(ii) Tea leaves from tea can be separated using the same method as W.
(iii) Harmful bacteria present in water can be killed by using method X.
Now, select the correct statement regarding U-X.

A U can be sedimentation and V can be chlorination.
B U can be chlorination whereas X can be boiling.
C W can be filtration whereas X can be chlorination.
D U can be filtration whereas X can be sedimentation.


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