Question

Q7. Think and Answer:
Rahul was feeling very thirsty after playing out in the sun. He took
out a bottle of cold water from the refrigerator. After sometimes
he saw tiny drops of water on the outer surface of the bottle.
Why this has happened?​

Answer 1

Due to condensation of moisture present in the air after coming in contact with the cold surface of the bottle

Explanation:

• There are tiny droplets of water on the surface of a cold water bottle because the moisture present in the air has condensed on its surface after coming in contact to it.

• As we know that water is present in the air in the form of humidity and when this humid air comes in contact to a cold water bottle's surface or any cold surface it leaves off its thermal energy to this cold surface and condenses on it which appears in the form of tiny droplets.

#TOPIC: condensation, humidity

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https://brainly.in/question/7402792

Answer 2

Condensation is the reason why Rahul found small droplets of water on the outer surface of the bottle.  

Explanation:

• When it is a hot climate, the temperature of the air is high. When a cold water bottle is taken out of the fridge and kept on the table, the surface of the glass is cold due to its contact with the water.
• However, the outer surface of the bottle is in contact with the hot air.
• Therefore, the air that is present near the cold surface loses heat and transforms into liquid and shows itself in forms of small droplets of water.

Learn more about Condensation:

What are the prerequisites for condensation?

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Dew point temperature is the temperature at which condensation begins when

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