Question

With the help of an activity show that evaporation takes place at a temperature below its boiling point​

Answer 1

It depends upon CONCENTRATION of water vapor in air (humidity). If the humidity is low, the evaporation will be fast even at temperatures below room temperature. Also if you somehow lower the pressure, the liquid water will start boiling at temperatures lower than 100°C, but I'm pretty sure it counts as boiling and not evaporation.

Answer 2

The evaporation depends upon concentration of water vapour in the air.

Explanation:

• The evaporation take place "below the boiling point".
• The evaporation usually occurs the when the water is boiled at high temperature, but below the "boiling point" it starts.
• The "boiling point of water" is $100^o$C.  The constant temperature makes the water to get heated but during prolonged heating the evaporation happens at little temperature update.
• Hence, before of reaching the boiling point the evaporation starts due to prolonged heating.

Activity show that evaporation takes place at a temperature below its "boiling point"​:

• Put some amount of water in a cup or a container and place it in sunlight.
• And observe it after few hours about 1 -2 hours.
• Then, we will observe which the level of water has been decreased.

To know more:

Evaporation of a liquid can take place

1 At its boiling point

2 At all temperature

3 At its freezing point

4 At a fixed temperature

https://brainly.in/question/2905047