it needs to be boiled for about 3 minutes at sea level.
Forever unless you have treated the water to make it potable.
A boiled egg will float in salt water.
That really depends on what the water is contaminated with.However contaminated usually means dirty, foul, toxic.Therefore contaminated water is generally not good to drink, could make you ill and may even kill you.
Eggs in water are good for cooking because they can be boiled to make hard-boiled eggs or poached to make a soft and creamy texture.
To make ice cubes using boiled water, simply boil the water first and then let it cool down to room temperature. Pour the cooled boiled water into an ice cube tray and place it in the freezer until the water freezes into ice cubes.
No, if the water is contaminated then refrigeration will NOT make it safe to drink.
Sure, a cloud is just boiled water.
it will make holes
yes
When cornflower and water are boiled, the cornflower thickens to make a jelly.,
The black ring i caused by letting the cooked egg sit in the hot water - to make sure it doesn't have a dark ring dunk egg in cold water as soon as it is cooked.
Because contaminated water has dangerous bateria and it could make you very sick.