Which statement about pneumatic guns is true?

Which statement about pneumatic guns is true?

• A. Pneumatic guns use water to fire pellets and BBs.
• B. Pneumatic guns use air to fire pellets and BBs.
• C. Pneumatic guns store energy in springs to fire projectiles.
• D. Pneumatic guns rely on chemical propellants to launch projectiles.

Answer: (B)

Pneumatic guns propel projectiles using compressed air. The energy is stored as pressurized gas in a reservoir (or cartridge) and released through a valve to push the pellet or BB down the barrel. That’s why the statement that pneumatic guns use air to fire pellets and BBs is true. Water isn’t used to propel the projectile in this system, and a spring-powered mechanism—where energy is stored in a stretched or compressed spring—belongs to a different type of gun. Chemical propellants involve a chemical reaction to generate gas, which again is not how pneumatic systems operate. In practice, pneumatic guns like CO2 BB guns and PCP air rifles rely on compressed gas to launch their projectiles.

Pneumatic guns propel projectiles using compressed air. The energy is stored as pressurized gas in a reservoir (or cartridge) and released through a valve to push the pellet or BB down the barrel. That’s why the statement that pneumatic guns use air to fire pellets and BBs is true. Water isn’t used to propel the projectile in this system, and a spring-powered mechanism—where energy is stored in a stretched or compressed spring—belongs to a different type of gun. Chemical propellants involve a chemical reaction to generate gas, which again is not how pneumatic systems operate. In practice, pneumatic guns like CO2 BB guns and PCP air rifles rely on compressed gas to launch their projectiles.