You can do it where there are generally no people or in your backyard
It all depends on the laws in the location where you live.
Depends on the pellet gun, the distance, and the game laws where you live. Most pellet guns should not be used to hunt anything bigger than a squirrel. They do not have enough energy for a humane kill.
The best person to ask is your parole officer. Each state / county has different laws on Pellet guns
It all depends on the final destination laws and regulations.
You can, but, the question is should you and does it violate any local laws.
It depends on the model and the caliber of the Pellet gun.
I think you mean pellet gun. That is a gun that fires a small lead pellet but does not use gun powder. It uses compressed air or compressed gasses to push the pellet.
A pellet gun is not adequate for protection, and will get you arrested.
Any pellet gun should be handled like a real firearm. Yes you can be killed with a pellet gun under the right circumstances.
It all depends on the model and who made the pellet gun. I suggest that you re-post the queston with the model and make of the pellet gun to get an answer.
You will need to contact a lawyer. To many variations in local and state laws for a cookie cutter answer.