Which of the following is/are example(s) of Aerosol colloids?

All of these

The correct answer is option 4. All of these.

Fog, clouds, and mist are all examples of aerosol colloids. Aerosols are a type of colloid in which tiny particles or droplets are dispersed in a gas. In the examples given:

1. Fog: Fog is a colloid where tiny water droplets are dispersed in the air.

2. Clouds: Clouds consist of tiny water droplets or ice crystals dispersed in the atmosphere.

3. Mist:  Mist is similar to fog, consisting of fine water droplets suspended in the air.

All of these examples involve the dispersion of small particles or droplets in a gas, making them aerosol colloids.