Blackboard becomes wet after wiping it with a wet cloth. The board then dries up after some time due to evaporation.

True

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False

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Solution

The correct option is A True
The water present on the wet blackboard evaporates. So it dries up after sometime.

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Similar questions

State for each of the following whether it is due to evaporation or condensation:

(a) Water drops appear on the outer surface of a glass containing cold water.

(b) Steam rising from wet clothes while they are ironed.

(d) Blackboard dries up after wiping it.

(e) Steam rising from a hot girdle when water is sprinkled on it.

State for each of the following whether it is due to evaporation or condensation :
(a) Water drops appear on the outer surface of a glass containing cold water.
(b) Steam rising from wet clothes while they are ironed.
(c) Fog appearing on a cold winter morning.
(d) Blackboard dries up after wiping it.
(e) Steam rising from a hot girdle when water is sprinkled on it.

Question 2 (d)

State for the following whether it is due to evaporation or condensation:
Blackboard dries up after wiping it.

Blackboard dries up after wiping it with water. This is because of phenomenon X. The droplets on the outer surface of the cold glass are due to phenomenon Y. Which one of the following is correct?

Q. Wet floors dries up due to ____________.

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Blackboard becomes wet after wiping it with a wet cloth. The board then dries up after some time due to evaporation.

The correct option is A TrueThe water present on the wet blackboard evaporates. So it dries up after sometime.

The correct option is A True
The water present on the wet blackboard evaporates. So it dries up after sometime.