Give reasons as to why It is easier to swim in sea water than in river water.
A
The density of river water is greater
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B
The density of sea water is greater
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C
Both their densities are the same
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D
None of these
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Solution
The correct option is B The density of sea water is greater Sea water contains dissolved salts which makes its density more than river water Hence upthrust is more in sea water than river water So it is easier to swim in sea water than in river water