Question

why does egg sink in fresh water and floats in strong water solutions

Answer 1

Because its density is less in fresh water.

Answer 2

hey bro,
Have you read about Archimedes principle.
you know that fresh water have low density than the strong water solution.
Archimedes principle says that object of low density cannot be dissolved in the object of high density.
from the above theory,
we can definitely say that egg sinks in freshwater (low density) but cannot sink in strong water solution (high density).
plzzzzzzzzzzz mark it as brainliest answer.