Medium
Why do we get burnt more by steam than by boiling water at the same temperature?
(N/A) The temperature of both boiling water and steam is $100^{\circ}C$. However,steam contains additional latent heat of vaporization. When steam condenses into water at $100^{\circ}C$,it releases $22.6 \times 10^{5} \ J \ kg^{-1}$ of energy. Because of this extra heat energy,steam causes more severe burns than boiling water at the same temperature.
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Compared to a burn due to water at $100\,^{\circ}C$,a burn due to steam at $100\,^{\circ}C$ is:
Medium
View SolutionValues for latent heat in Column-$I$ and its values are given in Column-$II$. Match the following:
Column-$I$ Column-$II$ $(a)$ Latent heat of vaporization $L_V$ $(i)$ $22.6 \times 10^5 \, J/kg$ $(b)$ Latent heat of fusion $L_f$ $(ii)$ $33.3 \times 10^5 \, J/kg$ $(iii)$ $3.33 \times 10^5 \, J/kg$
| Column-$I$ | Column-$II$ |
| $(a)$ Latent heat of vaporization $L_V$ | $(i)$ $22.6 \times 10^5 \, J/kg$ |
| $(b)$ Latent heat of fusion $L_f$ | $(ii)$ $33.3 \times 10^5 \, J/kg$ |
| $(iii)$ $3.33 \times 10^5 \, J/kg$ |
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View Solution$A$ block of ice with mass $m$ falls into a lake. After impact,a mass of ice $m/5$ melts. Both the block of ice and the lake have a temperature of $0^{\circ}C$. If $L$ represents the latent heat of fusion,the minimum distance the ice fell before striking the surface is
Medium
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