What causes water droplets to form on the outer surface of a glass containing ice-cold water?
Show answer & explanation
Correct answer: B
Explanation
The formation of water droplets on the outer surface of a glass filled with ice-cold water is a physical process known as condensation.
Water vapor (water in gaseous form) is always present in the surrounding air.
When this invisible water vapor comes into contact with the cold outer surface of the glass, it loses energy and reverts to its liquid state.
This is precisely analogous to how rain falls from clouds or how mist forms on windows during winter.
This process demonstrates the presence of moisture in the air, which transforms into liquid when exposed to lower temperatures.
Therefore, option (B) represents the correct scientific explanation.
Correct Answer: Option 2