6. Are the melting point of ice and freezing point of water different?7. Why dry ice
so ?
8. Evaporation of a liquid takes place only at a fixed temperature. Do you agree with this statement ? Why?
9. Name the temperature at which a solid changes into liquid.
10. Why does water kept in an earthen pot becomes cold during summer?
11. Give examples of substances which sublime.
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Explanation:
1 dry ice is solid carbon dioxide
2 no , evaporation can take place at any temperature
3 that is not fixed for all solids
4 because earthen pot has pores from which water evaporates leaving behind a cooling sensation
5 camphor and dry ice and ammonium chloride
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