That is a complicated function of:
Without more data than is given in your question, no real answer can be given. I would suggest doing some research yourself on nuclear weapons effects.
A good place to start is "The Effects of NUCLEAR WEAPONS" Edited by Samuel Glasstone. I have a copy of the 1964 edition with the weapons effects circular sliderule that I paid half a dollar for at a library discards sale (the sliderule alone is worth well over 20 times that, even though my book has damage seriously reducing its value on the market). If your library doesn't have it, request it on interlibrary loan. (I don't think you can get the sliderule anymore though)
nuclear explosion?
When and what explosion? One of the nuclear test shots. If so which?Remember Chernobyl was not a nuclear explosion, it was a steam explosion and graphite fire.
The only nuclear explosions in Japan were the two in WW2, on Hiroshima and Nagasaki.However I believe you meant the Japanese nuclear reactorexplosion, which was not a nuclear explosion it was either a steam explosion and/or a hydrogen/oxygen chemical explosion. That occurred at Fukushima.
no
a nuclear explosion
No such explosion ever happened.
Chemical energy- to begin the explosion- and nuclear energy- the main explosion.
no.
testing without nuclear explosion
It would probably light up like a piece of coal and burn. Diamond burns quite well.
This question makes no sense as an atomic bomb is a nuclear bomb and vice versa. They are the same thing.
Nuclear explosions are not controlled. Nuclear reactors are controlled.The first controlled nuclear reaction in the US was on December 2, 1942.The first nuclear explosion in the US was on July 16, 1945.