A solid particle aerosol produced by condensation of vapors or combustion products (e.g., welding fume) is called

A solid particle aerosol produced by condensation of vapors or combustion products (e.g., welding fume) is called

• A. Mist
• B. Dust
• C. Fume
• D. Smoke

Answer: (C)

Fume is a solid particle aerosol formed when vapors or combustion products cool and condense into solid particles. Welding fume is a classic example, where metal vapors released at high temperature condense into very fine solid particles as the plume cools. This distinguishes it from mist, which is liquid droplets; dust, which comes from mechanical disruption and is typically larger; and smoke, which originates from combustion and can include both solids and liquids but is defined by the combustion process rather than condensation of vapors into solid particles.

Fume is a solid particle aerosol formed when vapors or combustion products cool and condense into solid particles. Welding fume is a classic example, where metal vapors released at high temperature condense into very fine solid particles as the plume cools. This distinguishes it from mist, which is liquid droplets; dust, which comes from mechanical disruption and is typically larger; and smoke, which originates from combustion and can include both solids and liquids but is defined by the combustion process rather than condensation of vapors into solid particles.