Question

how can you relate the formation of water droplets on the outer surface of a bottle taken out from the refrigerator with formation of dew?

Answer 1

in both cases, the water vapour of the atmosphere gets condensed because of the low temperature on the surfaces

Answer 2

1 . when the bottle is taken out of  the refrigerator the around the bottle cool

2. as the air cools due to decreases in temperature it become saturated with water vapour

3. as a result the excess water vapour get converted into tiny droplets on the surface of the bottle called dew