Subject :NSO Class : Class 4
Which of the following is the best method of purification of muddy water?
A 
B 
C 
D None of these
Ans 1:
Class : Class 7
Ans 2:
Class : Class 1
Option A is repeated
Ans 3:
Class : Class 4
Won't the mud mix with the water?
Ans 4:
Class : Class 4
Don't we have to use Distillation or evaporation
Ans 5:
Class : Class 7
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Ans 6:
Class : Class 5
Ans 7:
Class : Class 7
Ans 8:
Class : Class 8
C
Ans 9:
Class : Class 6