Multiple choice

Which change has been observed in the phase of a matter, when air comes in contact with a cool surface?

  1. Gas into liquid

  2. Liquid into liquid

  3. Solid into Liquid

  4. Liquid into gas
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When warm air containing water vapor comes in contact with a cool surface, condensation occurs. This phase change from gas (water vapor in air) to liquid (water droplets) is the same process that causes dew to form on grass or water droplets on cold drinks.

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