GK
ECOLOGY BIODIVERSITY CONSERVATION ENVIRONMENTAL ISSUES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When concentration of suspended particles organic and inorganic substances increases it becomes polluted.
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When concentration of dissolved substances gets increased it becomes polluted.
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When the organic matter increased it becomes polluted.
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When the inorganic matter increases it becomes polluted and unfit for use.
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Detailed explanation-1: -Typhoid. Also known as typhoid fever, typhoid is one of the common water pollution diseases, caused by salmonella typhi bacteria.
Detailed explanation-2: -Diarrhoea, typhoid and malaria fever are water-borne disease. They are caused by drinking contaminated water.
Detailed explanation-3: -Examples include microorganisms, (e.g., E. coli, Giardia, and noroviruses), inorganic chemicals (e.g., lead, arsenic, nitrates, and nitrites), organic chemicals (e.g., atrazine, glyphosate, trichloroethylene, and tetrachloroethylene), and disinfection byproducts (e.g., chloroform).
Detailed explanation-4: -The self-purification stabilizes the wastewater, but oxygen supply limits the biodegradation process. In the natural environment, approximately 3 g oxygen can be dissolved per m2 per day if the water is completely deprived from dissolved oxygen; this is the magnitude of self-purification capacity.