The egg kept in the beaker containing pure water sinks but that kept in the beaker kept in saturated salt solution floats on it. This is due to the density of water, saturated solution, and the egg. The density of the egg is greater than pure water but less than that of saturated salt solution.

Any object that has a density more than the solution sinks in it. If its density is less than the solution or liquid, it floats on it. These are the cases of the law of floatation.