Advertisements
Advertisements
प्रश्न
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.
Advertisements
उत्तर
Diffusion is the process by which the smell of a lighted incense stick spreads in the entire room.
APPEARS IN
संबंधित प्रश्न
Give reasons:
A gas fills completely the vessel in which it is kept.
Give reasons:
We can easily move our hand in air, but to do the same through a solid block of wood, we need a karate expert.
Give a reason for the following observation.
Naphthalene balls disappear with time without leaving any solid.
A bottle of perfume was opened in a room. The smell of its vapours spread in the entire room. Name the property of gases which is responsible for this behaviour of perfume vapours.
Why do gases diffuse very fast?
When a gas jar containing colourless air is kept upside down over a gas jar full of brown-coloured bromine vapour, then after some time, the brown colour of bromine vapour spreads into the upper gas jar making both the gas jars appear brown in colour. Which of the following conclusion obtained from these observations is incorrect?
A substance has neither a fixed shape nor a fixed volume. State whether it is a solid, a liquid or a gas.
Why do gases not have fixed shape?
Comment upon the following:-
filling a gas container
Which of the following is false for gases?
