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. |
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 |
1. | (a) and (b) | 2. | (b) and (c) |
3. | (c) and (d) | 4. | All of these |