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Bacteria in Sewage

Sewage contai...

Question

Sewage contains which of the following wastes/ impurities?

A

Dissolved wastes

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B

Non-biodegradable wastes

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C

Suspended impurities

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D

All of the above

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Solution

The correct option is D
All of the above

Sewage contains dissolved (such as fertilizers) and suspended impurities (such as human excreta). It also contains non-biodegradable (such as plastics, glass) and biodegradable impurities (such as food waste).

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