Question

give reason to get hard
boiled egg when
We are adding
sodium chloride to get hard​

Answer 1

Answer:

we add sodium chloride (NaCl) to make a boiling egg hard because the propertiy NaCl is the most powerful to make such food items hard.

Explanation:

Answer 2

Answer:

NaCl or salt is added to the water when boiling eggs because addition of salt or other non volatile solid reduces the vapour pressure of the liquid () and consequently the boiling point (the temperature at which the vapour pressure equals the atmospheric pressur) increases and the water can attain a temperature higher than 100 degree C before starting to boil. This helps cook and hard boil the egg quicker as water is now hotter than what it was without the addition of salt.