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Matter in Our Surroundings — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceMatter in Our Surroundings2 Marks
Question
Which produces more severe burns: boiling water or steam? Why?
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Answer

Steam causes more severe burns than boiling water because the steam contains more heat, in the form of latent heat, than boiling water. Hence, when steam falls on our skin and condenses to produce water it gives out 22.5 × 105 joules per kilogram more heat than boiling water.

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