MEDIUM
9th CBSE
IMPORTANT
Earn 100
How do solids, liquids and gases differ in shape and volume?
Important Questions on Matter in Our Surroundings
MEDIUM
9th CBSE
IMPORTANT
Arrange the following substances in increasing order of force of attraction between their particles (keeping the substance having the minimum force of attraction first):
Water, Sugar, Oxygen
MEDIUM
9th CBSE
IMPORTANT
Give two reasons to justify that water is a liquid at room temperature.
MEDIUM
9th CBSE
IMPORTANT
Give two reasons to justify that an iron almirah is a solid.
MEDIUM
9th CBSE
IMPORTANT
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.
MEDIUM
9th CBSE
IMPORTANT
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.
MEDIUM
9th CBSE
IMPORTANT
What does the diffusion of gases tell us about their particles?
MEDIUM
9th CBSE
IMPORTANT
Give one example of diffusion of gases in a liquid.
MEDIUM
9th CBSE
IMPORTANT
Give reason for the following observation:
The smell of hot sizzling food reaches us even from a considerable distance but to get the smell from cold food, we have to go close to it.
