Sewage containing organic waste should not be disposed in water bodies because it…
CHEMISTRY · Single correct · CBSE · Chemistry · Is Matter Around Us Pure? · Is Matter Around Us Pure?
Problem
Sewage containing organic waste should not be disposed in water bodies because it causes major water pollution. Fishes in such a polluted water die because of:
(1) Large number of mosquitoes
(2) Increase in the amount of dissolved oxygen
(3) Decrease in the amount of dissolved oxygen in water
(4) Clogging of gills by mud