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It is easier for a man to swim in sea water...

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It is easier for a man to swim in sea water, than in river water because

Answer & Solution
Correct Answer: Option B
It is easier for a man to swim in sea water, than in river water because sea water contains more amount of salt as compared to river/fresh water as a result its density increases and hence the buoyant force increases which makes it easier to swim in sea water.
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