your question is unclear. By far do you mean range or distance of an effect? If distance of effect, which effect? By large do you mean physical size or yield? Be more specific.
11.3 square miles
you can't protect yourself from it unless you have a very large room made completely of lead but sstill the lead would kill you just as the nuclear bomb would but it would just take more time to do so.
An atomic bomb has more destructive potential, but a large, long-lived tornado would probably release more energy than a small nuclear weapon.
That depends on yield and burst height/depth.
depends on the size of the nuke, and how many you drop
You get a rather large explosion.
11.3 square miles
For a massive wedge tornado, anything short of a nuclear bomb would probably not do much. A nuclear bomb would probably disrupt it, but at the same time would cause far more damage than the tornado itself could.
A dirty nuclear bomb is detonated by using a conventional explosive. It disperses a large amount of nuclear material across the area.
you can't protect yourself from it unless you have a very large room made completely of lead but sstill the lead would kill you just as the nuclear bomb would but it would just take more time to do so.
An atomic bomb has more destructive potential, but a large, long-lived tornado would probably release more energy than a small nuclear weapon.
That depends on yield and burst height/depth.
depends on the size of the nuke, and how many you drop
A nuclear bomb is any bomb with any nuclear or atomic material inside it, while a plutonium bomb is a specific type of nuclear bomb. Plutonium could be the nuclear material inside the bomb, and if it is, it's a plutonium bomb.
the hydrogen bomb, is a nuclear bomb
No. A lahar carries far less power than a nuclear bomb. However, large explosive eruptions, which can lead to lahars, can be as strong as or stronger than a nuclear explosion.
The bomb capable of causing the most damage would be a large fusion type nuclear weapon, commonly called the H Bomb or Hydrogen Bomb. However, if it is close enough to you, even a very small regular bomb was be as deadly as could be to that person.