Question

When a fresh egg is put into a beaker filled with water,it sinks in water.but when a lot of salt was dissolved in the water,the egg begins to rise and then floats.why?

Answer 1

Density of egg decrease when it is boiled compared to that of water. So it floats.

Answer 2

With campare to Salt water which has large amount of salt content in it therefore there weight is light and hence the egg is floating in it and in another that is fresh water which has ions in it and it is heavy or bulky with campare to Salt water hence in fresh water the egg is shrink.

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