Question

what previously known chemical did nobel use to make dynamite?
a toluene
b nitroglycerine
c ammonium nitrate
d gunpowder

Explanation:

Alfred Nobel invented dynamite by using nitroglycerine (a previously known explosive chemical) and combining it with an absorbent material to make it safer to handle. Toluene is used in other chemical processes, ammonium nitrate is part of some explosives but not the core in Nobel's dynamite creation as the main known chemical he used was nitroglycerine, and gunpowder is a different explosive with a different composition and was not the chemical Nobel used for dynamite.

Answer:

b. nitroglycerine