A liquid can easily change its shape but a solid can not because:

1. the density of a liquid is smaller than that of a solid.
2. the forces between the molecules is stronger in solid than in liquids.
3. the atoms combine to form bigger molecules in a solid.
4. the average separation between the molecules is larger in solids.

Subtopic:  Properties of Fluids |
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The properties of a surface are different from those of the bulk liquid because the surface molecules

(a) are smaller than other molecules
(b) acquire charge due to collision from air molecules
(c) find different types of molecules in their range of influence
(d) feel a net force in one direction

Choose the correct option:
1. (a) and (b) 2. (b) and (c)
3. (c) and (d) 4. All of these
Subtopic:  Properties of Fluids |
 63%
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