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Comment upon the following:- density - Science

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प्रश्न

Comment upon the following:-

density

टीपा लिहा

उत्तर

Density is mass per unit volume.

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पाठ 1: Matter in Our Surroundings - Intext Questions [पृष्ठ ६]

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एनसीईआरटी Science [English] Class 9
पाठ 1 Matter in Our Surroundings
Intext Questions | Q 2. (b) | पृष्ठ ६

संबंधित प्रश्‍न

Tabulate the differences in the characteristics of states of matter.


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.


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.


Explain how, the smell of food being cooked in the kitchen reaches us even from a considerable distance.


Explain why, when a bottle of perfume is opened in a room, we can smell it even from a considerable distance.


Look at the diagram on the right side. Jar A contains a red-brown gas whereas jar B contains a colourless gas. The two gas jars are separated by a galas plate placed between them

  1. What will happen when the glass plate between the two jars is pulled away?
  2. What name is given to the phenomenon which takes place?
  3. Name the brown gas which could be in jar A.
  4. Which is the colourless gas most likely to be present in jar B?
  5. Name one coloured solid and one colourless liquid which can show the same phenomenon.


Comment upon the following:-

fluidity


Which of the following is false for gases?


Explain why?

  1. A gas fills a vessel completely?
  2. 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.


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