What is the most important source of water pollution in Pakistan?
Correct answer: D. Agricultural and municipal wastage
- A. Industries
- B. Transportation
- C. Mining Industry
- D. Agricultural and municipal wastage
Explanation
Contamination of water bodies is called water pollution. Pakistan is an agricultural country. The root cause of water pollution in Pakistan arises here. The farmers use tons of water for their fields and crops and then dump all the contaminated water into lakes and rivers. In addition to that, the municipal committees are least bothered about the pollution caused by the garbage they throw in the water bodies. The industries also play a role in this, but the formerly mentioned points are the main causes of destruction. Thus, we will go for option D.
This question appeared on the ETEA MDCAT 2011 paper, which you can sit online with every answer explained.
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About Water Pollution and Treatment
Water pollution covers biological, chemical and physical contaminants, including pathogens, toxic metals, detergents and excess nutrients. Treatment involves screening, sedimentation, coagulation, filtration, disinfection and wastewater processing, while biochemical oxygen demand, chemical oxygen demand, eutrophication and dissolved oxygen indicate pollution levels.
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