Solid or liquid particles dispersed in a gaseous medium?

Solid or liquid particles dispersed in a gaseous medium?

• A. Dusts
• B. Fumes
• C. Mists
• D. Aerosols

Answer: (D)

Think of particles floating in air as a single category: aerosols. An aerosol is any solid or liquid particle suspended in a gaseous medium, like dusts (solid particles), mists (liquid droplets), or fumes (tiny particles formed from vapors). The key point is that aerosol is the broad, inclusive term that covers both solid and liquid particles in a gas, which is why it’s the best answer.

Think of particles floating in air as a single category: aerosols. An aerosol is any solid or liquid particle suspended in a gaseous medium, like dusts (solid particles), mists (liquid droplets), or fumes (tiny particles formed from vapors). The key point is that aerosol is the broad, inclusive term that covers both solid and liquid particles in a gas, which is why it’s the best answer.