Question

Paheli asked for a glass of water from Boojho. He gave her a glass of ice-cold water. Paheli observed some water droplets on the outer surface of the glass and asked Boojho, How these droplets of water were formed? Which of the following should be Boojho’s answer? i) Evaporation of water from the glass ii) Water that seeped out from the glass iii) Evaporation of atmospheric water vapour iv) Condensation of atmospheric water vapour

Answer 1

Answer:

The surface ice-cold glass, when exposed to air, forms water droplets on the outer surface of glass because the water which is in the form of vapour in the atmosphere gets condensed.

Hence, the correct answer is option (d) Condensation of atmospheric water vapour.

Answer 2

Answer:

option 4

Explanation:

when water vapour come in contact with the glass (which is low in temp) it cools down and form water droplets