What type of firearm is usually intended to be fired from the shoulder and uses gunpowder?

The correct answer is a rifle. Rifles are designed to be fired from the shoulder, making them stable and accurate for long-distance shooting. They typically have a longer barrel compared to other firearms, which allows for greater accuracy and velocity due to the spiraled rifling inside the barrel that imparts a spin to the bullet. This design helps stabilize the projectile during flight.

In contrast, shotguns also fire from the shoulder and utilize gunpowder, but they are primarily designed for shooting moving targets at shorter ranges using shells that contain multiple small pellets or a single slug.

Pistols and revolvers, while they use gunpowder and can be fired with one hand, are not intended to be fired from the shoulder. They are designed for closer-range shooting and typically have shorter barrels, which affects accuracy and effective range compared to a rifle.

Thus, when considering the specific design and intended use of firearms, the type that is fired from the shoulder and uses gunpowder is classified as a rifle.