I'm assuming you mean if you carry a weapon does it have to be concealed. It depends on where you are. For instance, the state of Tennessee does not issue a "concealed" permit, but a handgun carry permit and there is no specific requirement to conceal the gun by law. However, many states do require the weapon to be concealed. Check handgunlaw.us for more information.
It depends on local state laws. In Tennessee, if you have a handgun permit, the gun technically does not have to be concealed at all (although most people recommend concealing the gun), but in some states, the gun has to be completely hidden.
It depends on which state you are in and how you plan on carrying the gun.
Most states (except Wisconsin and Illinois) have a concealed carry law. Most make you meet certain requirements to obtain a concealed weapons permit to be able to carry concealed. Some states have gun permits that let you carry concealed and open. But then in Vermont, it is lawful to carry a firearm openly or concealed provided the firearm is not carried with the intent or avowed purpose of injuring a fellow man. But you must meet the state requirements.
Update: as of 2009 or 2010, Wisconsin has now passed a law allowing the issuing of permits.
Technically, yes. Concealed "Weapon" refers to anything classified as a weapon and Cconcealed "Gun" refers to guns only. Some states, such as Florida issue concealed weapons permits, and once you obtain it, you can carry any legal weapon. Other states, such as Tennessee issued handgun carry permits, and once you obtain it, you can carry any handgun you legally possess, but other weapons are not covered under the handgun permit.
You will have define the term "carry a gun". If you mean as a concealed weapon, no. You must be 21 to be issued a permit.
Yes, if you have a Texas concealed handgun carry permit, or a permit from any state with which Texas recognizes reciprocity, you can carry a concealed hangun in Texas.
Technically, it can be either. There is no law in Tennessee making it illegal to carry openly, and there is nothing on the permit or in the law stating the word "concealed."
No. You do not have to register any weapon in Missouri. The only permit needed in Missouri is the permit to carry a concealed weapon.
There is no gun registration in Virginia. As for concealed carry, you must possess either a Virginia concealed carry permit, or a concealed carry permit from a state whose permit is valid in Virginia.
No. California does not honor any "gun permits" from Nevada. I assume you are referring to the Nevada CCW (Concealed Carry of a Weapon) permit as Nevada does not have any actual "gun permits".
Depends on the laws of your state. In Virginia, open carry is legal- with or without a permit. In other states, a weapon may not be visible. You did not say what place.
Yes, if you have a concealed hand guns permit with you at all times. The ammunition can not be in the weapon or stored in the same place in the vehicle as the hand gun, however it may be in the clip or magazine of the weapon as long as they are not stored around eachother. So basically, you can have a concealed hand gun in your vehicle as long as you always have your permit for the weapon and it is not loaded.
No, citizens in Indiana can apply for a gun permit and a CCW (concealed carry) permit at their local sherriff's office. You MUST HAVE A PERMIT to carry the weapon, however, or else it will be a crime.
No
No
For concealed carry, no. Wisconsin does permit open carry with restrictions, but only law enforcement officers are permitted to carry concealed in Wisconsin.