Which term refers to droplets produced by a mechanical process such as spraying?

Which term refers to droplets produced by a mechanical process such as spraying?

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

Answer: (A)

Droplets produced when a liquid is broken into small liquid particles and dispersed in air are called mists. This happens during spraying or atomization, where a nozzle or device creates fine liquid droplets that remain suspended in the air. Fumes are tiny particles formed when substances are heated and vaporize, then condense into particles—often metal fumes from high-temperature processes—so they originate from vaporization, not mechanical spray. Vapors are the gaseous form of substances, not droplets. Dusts are solid particles created by grinding or handling solids, not liquid droplets. Since spraying creates liquid droplets in air, the term that fits best is mist.

Droplets produced when a liquid is broken into small liquid particles and dispersed in air are called mists. This happens during spraying or atomization, where a nozzle or device creates fine liquid droplets that remain suspended in the air. Fumes are tiny particles formed when substances are heated and vaporize, then condense into particles—often metal fumes from high-temperature processes—so they originate from vaporization, not mechanical spray. Vapors are the gaseous form of substances, not droplets. Dusts are solid particles created by grinding or handling solids, not liquid droplets. Since spraying creates liquid droplets in air, the term that fits best is mist.