There probably couldn't, though if an astrophysicist wants to correct this feel free. The problem is that gas molecules have high velocities. If the mass of the body is high enough to have an escape velocity higher than the gas molecules at its surface, then the pressure in the interior is probably high enough to compress the gas into a liquid or supercritical fluid state.
This would be terribly difficult since the planet is entirely gas.
No because it is a gas planet meaning that it is made entirely of gas.
The planet Saturn is almost entirely made of gas. It is not for nothing that it is known as a gas giant.
Neptune
Uranus is a "gas giant" planet; we're not entirely certain that it HAS a "surface".
No, it is composed entirely of gas and a landing is not possible. cp
Yes. Neptune is made entirely of deadly gasses.
no
Gas giants are called as such because they are generally the largest type of planet, and they consist mostly if not entirely of gases.
No. It is a gas planet.
depends on what is the planet could be nitrogen helium etc
depends on what is the planet could be nitrogen helium etc