Arrange the following substances in increasing order of force of attraction between their particles (keeping the substance having them in imum force of attraction first):

Water, Sugar, Oxygen

Why do gases have neither a fixed shape nor a fixed volume?

How do solids, liquids and gases differ in shape and volume?

Give two reasons to justify that:

(a) Water is a liquid at room temperature.

(b) An iron almirah is a solid.

(a) When an incense stick(agarbatti) is lighted in one corner of a room, its fragrance quickly spreads in the entire room. Name the process involved in this.

(b) A girl is cooking some food in the kitchen. The smell of food being cooked soon reaches her brother’s room. Explain how the smell could have reached her brother’s room.