Sometimes we see water droplets on the outer surface of the glass containing ice-cold water this is because the water vapour presents in air, on coming in contact with the cold glass of water, loses energy and gets converted to liquid state, which we see as water droplets.

water droplets on the outer surface of a glass containing ice cold water?

Reason for water droplets on the outer surface of a glass containing ice cold water?

Some of the learners also asked:
How water remains cool in earthen pots?