Question

Tell me how experienced egg dealer use a salt solution to find out whether a given egg is good or bad

Answer 1

It is interesting experiment . experienced dealer use salt solution to test whether a given egg is good or bad.

He takes a glass of salt solution ( mixture of salt , NaCl and water ). Put an egg in in glass . he observed that egg is floating in salt water and same egg sink in glass which contains water, it means egg is good ,while a bad doesn't sink in water -glass . this happens due to density of bad egg or rotten egg is less than density of good egg and density of salt solution is greater than density of egg. also density of water is less than density of good egg thats why it sinks in water glass.but rotten egg floats on water surface because rotten egg's density is less than density of fresh water. Of course , egg and salt solution experiment follow $\bold{\text{Archimedes principle}}$.