Q.

Burns caused by steam are much severe than those caused by boiling water because –

A. Steam pierces through the pores of body quickly
B. Steam has latent heat
C. Steam is gas and engulfs the body quickly
D. Temperature of steam is higher
Answer» B. Steam has latent heat
Explanation: When water changes into steam, it absorbs latent heat, and when steam condenses to form water, it gives out an equal amount of latent heat. Bums caused by steam are much more severe than those caused by boiling water, simply because steam contains more heat (in the form of latent heat) than boiling water.
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