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Question

Which of the following process is responsible for the smoke-like vapour which comes out of the mouth in winter?
  1. Precipitation
  2. Evaporation
  3. Condensation
  4. None of the above

A
Precipitation
B
Condensation
C
Evaporation
D
None of the above
Solution
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The correct option is C Condensation
  • When you exhale when it's cold outside, the water vapour in your breath condenses into lots of tiny droplets of liquid water and ice (solid water) that you can see in the air as a cloud, similar to fog which appears smoke like. This process is called condensation.
  • Hence Condensation process is responsible for the smoke-like vapour which comes out of the mouth in winter.
  • So, the correct answer is 'Condensation'.

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