For two reasons:
You dont have to but you should once its finished cooking and its cooling.
Yes.
Covering a roast while cooking it will help to retain the juices. Otherwise it may dry out in the cooking process.
When I was a professional cook, I found the best way to cover a burn, was to use a product called second skin, it is a jelly like pad, and then cover that with gauze and then a glove if it is on your hand or just the gauze if it is on your arm. For cuts a band aid then then a glove or a finger cot.
It is important to cover stuffing (dressing) while cooking it. One of the important ingredients to a good stuffing is water, and therefore, it can dehydrate making for a dry stuffing. If cooking stuffing, whether in a container by itself or inside a turkey, cover with aluminum foil. Also, if cooking the stuffing inside the turkey, be sure to baste the stuffing exposed while basting the turkey.
It will shorten cooking time, which in turn, can result in a modest saving of cooking gas; yes.
Baton cuts are used to make French fries when cooking. They can also be used in soups and stir fry's.
to help in the fast cooking of thi raw vegetables making them tender due to the steam.
i donot know
frying
Sear it first to make it nice and juicy then cover with tinfoil.
Why is it important to cover cuts, boils, skin infections and grazes? To prevent contamination of products, equipment, or surfaces which may result in an outbreak of food poisoning To protect cuts from infection (cover cuts with a blue waterproof plaster (metal detectable if required)