Yes. A paintball gun is not considered a firearm therefore a felon can purchase a paintball gun in Texas.
Not legally. In the U.S. a felon cannot own or possess a gun.
It isn't illegal for the felon to live in the house, but it is illegal for the felon to have any access to the gun.
The general answer is yes, the spouse of a felon can owna gun as long as the felon has no access to it.
No it is illegal.
Not if you are a convicted felon.
Is it illegal for a convicted felon to posess a pellet or b b gun?
No an ex felon can't own a gun , and if so it would have to be a non violent felony
Gun laws in Texas are some of the most relaxed in the United States. A gun store in Texas can sell a gun to anyone as long as they meet the necessary requirements. For a rifle or shot gun, one must be at least 18 years old and 21 if it is a hand gun. In both cases one must also be a resident of Texas.
They can't. Not in Texas, nor in any state or territory of the United States.
Generally speaking, no. A felon cannot own or even possess a handgun, and no state will knowningly issue a handgun permit to a felon. The exception to that is, if the felon has had his or her rights restored, they can own a gun and get a gun permit.
A spouse of a convicted felon can certainly own a gun in any state. I would highly recommend that the gun is not kept anywhere where the convicted felon can have access to it (do not keep it in the same home, it would be best to store it at a gun club or similar). If the gun is kept where the felon can have access, it will be easy to claim that you had posession of the gun and posession of any gun by a convicted felon is illegal under federal law.