Both the Hiroshima & Nagasaki bombs of WW2 detonated on the ring of fire. Not much beyond the bomb effects. It will depend on yield though and depth if subsurface.
It would create a mini nuclear explosion.
The most powerful nuclear weapon ever detonated was the Russian "Tsar Bomba" in 1961. (50 Megatons) It had a yield of 100 megatons of TNT, but was reduced to avoid fallout. People 100 km away would have gotten third degree burns from the heat of the explosion.
If the sample of plutonium was the correct isotope and near it's critical mass (300g IIRC) then it would gain sufficient mass to go super critical and undergo fission. This is the principal with which the first ever nuclear weapons were detonated. However if you're firing at a smaller sample it's unlikely there would be anything other than a chemical reaction with the uranium igniting and forming uranium oxide.
No. If there is a disaster in a nuclear plant - and those DO happen now and then - this can affect populations hundreds, or even thousands, of kilometers from the power plant.
Depends mostly on where you are relative to it and the yield. Other variables include:weatherterrainyour clothsif you are in a building, its constructionwere you near a windowetc.
To the planet very little. To life an awful lot.
The blast would probably be seen on earth, but as the moon has no atmosphere most of the force would go into space.
Wouldnt reach, dont have powerful enough rockets/good enough sea transport
North Korea would first launch a Nuclear Missile at South Korea, due to there past arguments. This would prompt the U.S to launch a missile, causing a nuclear war between communists and democracies.
Bad water pollution with radionuclides. Fishing might have to be banned. Possibly radioactive rain and snow, depending on how deep or shallow they exploded.
Yes, If it was carried into the ozone layer by a space ship and then detonated, then we would be in trouble. :D
america
It depends on the size of the Nuclear device, anywhere from 5 square miles and up
I think its MOAB(Mother Of All Bombs)........ The most destructive missile would be the peace maker missile carried 12 nuclear warheads.
A nuclear war, which would result in a nuclear winter and the end of most if not all of life on Earth.
You likely mean to limitation and disarmament of nuclear weapons. This would be the Nuclear Non-Proliferation Treaty (NPT).
No one has actually tried this before, and no physics engine has ever managed to imitate effects of such great force, so therefore it is quite hard to answer this question.