A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.
Make the process easier use this headache-free method for the easiest hard-boiled eggs. 1  Step 1: Place the eggs in a pot, cover with cold water, and place the pot on the stove. 2  Step 2: Bring the cold water to a boil. Once the water arrives at a rolling, bubbling boil, then turn the heat off, cover the pan, and remove it from the heat. Allow the eggs to sit in the water until they are cooked; about 9 minutes for medium eggs and 12 minutes for large eggs. Follow this timing to ensure that the eggs will be perfectly cooked with bright yellow yolks and non-rubbery egg whites.
Take a look at these eggs, which were cooked in fully boiling water for times ranging from 1 minute to 15 minutes: As you can see, not one of them is a perfect hard-cooked egg: the eggs go directly from having slightly translucent centers to having rubbery whites.