Question

How is fog different from smoke?
(answer in points)

Answer 1

Fog is different from smoke in the following important ways:

• Both fog and smoke have same dispersion medium (air) but they differ in dispersed phase. In smoke, solid particles are dispersed in air while in fog, liquid particles are dispersed in air.
• Fog is basically condensed water vapor. It isn't a pollutant but reduces visibility. Smoke, on the other hand, is a collection of particles that form by combustion of a material and is a pollutant.

Answer 2

How is fog different from smoke :

Fog :

• Fog is caused mainly due to water droplets in air.
• Fog reduces visibility.
• Fog causes no health problems.
• Fog is caused naturally.

Smog :

• Smog is actually a mixture of Smoke and Fog.
• Smog also reduces visibility.
• Smog can cause various health problems like eye irritation, serious breathing problems.  
• Smog is caused due to mixture of Smoke (emitted from Industries, combustion) and fog.