What is black powder?

The correct choice accurately defines black powder as a type of gunpowder that is traditionally composed of three primary ingredients: saltpeter (potassium nitrate), charcoal, and sulfur. This specific combination of materials has been used for centuries in firearms and artillery. When ignited, black powder produces large amounts of smoke and gas, which makes it effective for propelling a projectile but also creates a notable amount of residue.

Unlike smokeless powder, which is a modern advancement, black powder is recognized for its distinct characteristics, including the smoke produced during combustion, which can obscure vision and is a key differentiator in its use compared to smokeless alternatives. Additionally, the formulation of black powder is not exclusive to shotguns, nor is it used for cleaning firearms, but rather as a propellant in various historical and traditional firearms.