A glass filled with ice cubes was kept on a table. After sometime water drops were observed on the outer wall of the glass. Which of following is true regarding this phenomenon?

This phenomenon is known as condensation.

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This proves that water vapour is present in air.

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This is also observed when a hot object is cooled in the open.

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This phenomenon is known as evaporation.

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Solution

The correct options are
A This phenomenon is known as condensation.
B This proves that water vapour is present in air.
The process of conversion of water vapour into liquid is called condensation.
It is the state change from gas to liquid. The water vapour present in the air gets condensed, when they come in contact with the surface of glass. When they get condensed, they appear as water droplets.

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Similar questions

Q. A glass filled with ice cubes is kept on a table. After sometime water drops were observed sticking to the outside of the glass. Which of these sentences is TRUE of this phenomenon?
i) This phenomenon is known as condensation
ii) This proves that water vapour is present in air
iii) This is also observed when a hot object is cooled in the open.

A glass filled with ice cubes was placed on a table. After a while, water droplets appeared on the glass surface.

Which of these sentences is/ are TRUE?
i) This phenomenon is known as condensation.
ii) This proves that water vapour is present in the air.
iii) This is also observed when a hot object vapour in the open.

Question 10

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?

(a) Evaporation of water from the glass.

(b) Water that seeped out from the glass.

(d) Condensation of atmospheric water vapour.

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