There is a very load noise and something gets a hole poked in it.
You don't do it any good.
Under norml circumstances, nothing different than what happens when you fire it any other time.
Depends on the flare gun and the distance. A flare gun launches a big, very light projectile that happens to be on fire. Not intended as a weapon, but at VERY close range, could be used as one.
Gun safes are ordinarily merely intended to be burglar proof and have no particular fire resistance. Thus would not survive a house fire in which the particular room was badly damaged.
Fail to clean and maintain a firearm that is exposed to weather, and eventually rust and corrosion will make the gun unable or unsafe to fire.
Depending on the materials of the walls, the fire can spread. If the walls are fireproof, the fire will die once it runs out of oxygen.
When you open a door to a heated room (no fire), the heat should flow into the unheated room in an attempt to reach equilibrium. If there's fire in the closed room, the flames will grow when you open the door because there's more oxygen in the room you're in (and by the way, that's something you should never do in a fire... when your house is on fire, always check the door to see if it's warm before you open it).
First of all it is against the law to fire a gun into the air. Second of all you have no idea where the bullet will come down. It may possibly injure or kill someone. It is not only irresponsible but just plain foolish to do such a thing.
without CO2 or paintballs, you just put the bolt forward. In most guns this is how you de-cock after a day of play, but if you have a regulator, it may store a single shot. If you fire without co2, the gun will not cycle or fire a paintball, it will only go into the barrel. If you fire with no paintballs and co2, you may damage your gun.
A Fire Arm is a gun
you shoot and arrow because if you notice you fire a gun it involves fire comming from gun powder. there is no fire when you shoot an arrow
No you can't because a flare gun has a ballot not fire so No...