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Subjects
Science CBSE
Class 8
Pollution of air and water
Textbook questions
12.
NCERT Exemplar III
Exercise condition:
3
m.
1.
The phenomenon of marble cancer is due to
acid rain
soot particles
fog
CFCs
2.
Potable water is the water which is
obtained from a lake
pure and fit for drinking
obtained from a river
used only for washing clothes
3.
Which of the following procedures will give you water free from all impurities?
adding chlorine tablets
filtration
distillation
boiling
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