Which of the following statements are correct ?

Options

A. the crystal lattice of ice is mostly formed by covalent as well as hydrogen bonds
B. the density of water increases when heated from `0^@C" to "4^@C` due to the change in the structure of the cluster of water molecules
C. above `4^@C` the thermal agitation of water molecules increases. Therefore, intermolecular distance increases and water starts expanding
D. the density of water incrases from `0^@C` to a maximum at `4^@C` and the entropy of the system increases

Answer

A, B, C, D

Explanation

a) the crystal lattice of ice is mostly formed by covalent as well as hydrogen bonds
b) the density of water increases when heated from `O^@C" to "4^@C` due to the change in the structure of the cluster of water molecules
c) above `4^@C` the thermal agitation of water molecules increases. Therefore, intermolecualr distance increases and water starts expending
d) the density of water increase from `O^@C` to a maximum at `4^@C` and the entropy fo the system increases