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प्रश्न
Give a reason for the following observation.
Naphthalene balls disappear with time without leaving any solid.
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उत्तर
- Naphthalene undergoes sublimation easily, i.e., the change of state from solid to gas takes place easily.
- Thus, naphthalene balls disappear with time without leaving any solid.
संबंधित प्रश्न
Give a reason for the following observation.
We can get the smell of perfume sitting several metres away.
Which of the two diffuses faster : a liquid or a gas?
Why do gases have neither a fixed shape nor a fixed volume?
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.
Explain why, when a bottle of perfume is opened in a room, we can smell it even from a considerable distance.
Why do gases diffuse very fast?
Comment upon the following:-
kinetic energy
Which of the following is false for gases?
Explain why?
- A gas fills a vessel completely?
- Camphor disappears without leaving any residue.
2 litre He gas at 2 atm and 300 K is inserted into a 4 litre rigid container containing N2 at 600 K and 4 atm. Finally mixture is maintained at 600 K temperature. The final pressure of gaseous mixture would be ______ torr.
