Identify the correct statement.

(1) The molecules of water move faster than ice.

(2) The molecules are more closely packed in ice than water.

(3) The molecules of water vibrate to and fro only but those of ice are free to move within the boundary of the vessel in which it is kept.

(4) The molecules have more intermolecular space in ice than in water.

1. (1), (2) and (3)
2. (2), (3) and (4)
3. (1) and (2)
4. all are correct

(1) and (2)

Reason —

(1) Correct because water is in liquid state, so its molecules have more kinetic energy and move faster than those in solid ice.

(2) Correct as ice is in solid state where intermolecular spaces between the particles are very less than those of water which is in liquid state.

(3) Incorrect since in ice (solid), particles vibrate in fixed positions (to and fro) but in water (liquid), molecules are free to move within the vessel.

(4) Incorrect because water has more intermolecular space than ice.