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प्रश्न
Give reasons for the following:
A bottle of perfume on opening evolves an odour which can be sensed over a long distance.
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उत्तर
A bottle of perfume on opening evolves an odour because gases diffuse very easily and odour spreads over a large distance.
संबंधित प्रश्न
Fill in the blank:
The change of water vapour into water is called ......................
A kind of matter which can sublinje is
- water
- plastic
- milk
- iodine
What happens when a solid is heated ?
Give reason of We can walk through air.
Write whether the following statement are true or false.
Intermolecular force of attraction is greater in gases than in liquids.
Differentiate the general properties of solids, liquids and gases in the form of a table — with reference to volume.
Differentiate the general properties of solids, liquids and gases in the form of a table — with reference to free surfaces.
A crystal of iodine is placed in a closed flat bottom flask and heated. State how you would conclude from the observations seen, that interparticle space is minimum in solids and maximum in gases.
Among the following ______ is not a mixture.
You are provided with a mixture of naphthalene and ammonium chloride by your teacher. Suggest an activity to separate them with well labelled diagram.
