A) Hydrogen bonding interactions
B) Dipole - Dipole interactions
C) Dipole - induced dipole interactions
D) Induced dipole induced dipole interactions
Correct Answer: A
Solution :
Hydrogen bonding interactions Density of liq. water is 273K higher than that of ice and ice floats over water. Because as the temperature is raised above 277K, increase in volume due to expansion of liquid water becomes much more than decrease in volume due to breaking of H-bonds. Hence density of water is maximum.
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