(a)
Interpretation:
Whether compound B has higher molar mass is justified by boiling point data or is erroneous or can be true or false has to be determined.
Concept Introduction:
Dipole-dipole interactions come into play when partial charges of different dipoles interact with each other. Higher polarity between molecules, more will be dipole-dipole interactions between them and vice-versa. Boiling point is governed by strength of dipole-dipole interactions that is measured in terms of dipole moments. Boiling point is directly related to dipole moment of molecules. More dipole moment of molecules, higher will be boiling point and vice-versa.
(b)
Interpretation:
Whether compound A is more viscous is justified by boiling point data or is erroneous or can be true or false has to be determined.
Concept Introduction:
Viscosity is characteristic property of liquid particles that allows resistance to their flow. In other words, it represents opposition to flow of liquids.
(c)
Interpretation:
Whether compound B has stronger intermolecular forces is justified by boiling point data or is erroneous or can be true or false has to be determined.
Concept Introduction:
Refer to part (a).
(d)
Interpretation:
Whether compound B has higher surface tension is justified by boiling point data or is erroneous or can be true or false has to be determined.
Concept Introduction:
Attractive forces that act on molecules present on liquid surface in order to pull them into bulk of liquid is known as surface tension. Due to this surface tension, molecules tend to occupy as minimum surface area as possible.
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