No, it will not explode.
Yes, it very well may explode.
If you reverse the battery cables, yes the battery can possibly explode.
Yes it could over heat and explode. Don't do it.
They will not explode. They can however burst.
The battery will explode.
If you explode you die and the same applies to a car battery.
Yes, a car battery can explode if jumped improperly. Car batteries contain sulfuric acid that can produce gasses. If a spark ignites the gases the battery can explode like a bomb.
It can explode.
Yes
Yes, if you short the battery out it can explode and burn you.
Yes, it can ruin a battery and it can explode.