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← Heat and Thermodynamics
GK QUESTION#2928

Why does steam cause deeper burns than boiling water even though both are at 100°C?

  1. ABecause steam is at a higher temperature.
  2. BBecause steam releases additional latent heat upon condensation.Correct answer
  3. CBecause steam expands rapidly on contact.
  4. DBecause steam has greater molecular speed.
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Answer

B. Because steam releases additional latent heat upon condensation.

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Explanation

Steam condensing at 100°C releases latent heat in addition to the heat released as the resulting water cools. This can transfer more energy than an equal mass of water initially at 100°C. Burn severity also depends on exposure conditions.

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