Gunpowder

Gunpowder, jiske black powder bhi bola jaae hae, sab se purana chemicla explosive hae. Ii sulphur, charcoal aur potassium nitrate (saltpeter) se banaa rahe hae. Gunpowder ke banduuk ke goli, toop ke shell, rocket aur fireworks ke urrae ke khaatir kaam me laawa jaae hae. Iske mining, rasta banaana aur tunnel khode ke khaatir bhi kaam me laawa jaae hae.

Gunpowder ke China me sab se pahile banaawa gais rahaa. 904 AD me iske dawai ke khaatir kaam me laae ke khaatir banaawa ais rahaa.