Ever taken a dip in a swimming pool and wondered why the water smell. That's because of _____________added to water, as a disinfectant.

Nitrogen

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Chlorine

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Iodine

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Sodium

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Solution

The correct option is B
Chlorine

Chlorine is added to swimming pool as the disinfectant, which can be called as chlorination of water. Chlorination of water is important as many people swim in the pool and there are chances of contamination from the human body. The bacteria (Escherichia coli) escape from our bodies which can contaminate the pool water. Hence, to protect the water from contamination, chlorine is added.

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