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Q.

The critical temperature of water is higher than that of O2 because the H2O molecule has :

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a

fewer electrons than O2

b

two covalent bond

c

V-shape

d

dipole moment

answer is D.

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Detailed Solution

The critical temperature will increase as the intermolecular forces of attraction increase.

Water has a dipole moment and is a polar molecule. The dipole-dipole interactions between water molecules are quite strong. There is no dipole moment in oxygen. As a result, water's critical temperature is greater than oxygen's.

Water has H-bonding and hence, easily Liquefied. Higher the Tc, more easily Liquefied. Thus, option D is correct.

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