CBSE Class 10 Science 2015 Term II Outside Delhi Set 1

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Question : 5
Total: 36
List two main causes of the pollution of water of the river Ganga. State how pollution and contamination of river water prove harmful for the health of the people of neighbouring areas.
Solution:  
(i) Main cause of pollution of water of the river Ganga :
(a) Disposal of industrial effluents
(b) Human activities like bathing, washing etc.
(c) Disposal of unreacted sewage.
(ii) Harmful effects on health :
(a) Spreading of water borne diseases
(b) Consumption of contaminated fishes.
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