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Comment upon the following:- kinetic energy - Science

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प्रश्न

Comment upon the following:-

kinetic energy

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उत्तर

Kinetic energy is the energy possessed by a particle due to its motion.

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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

Name the three states of matter. Give one example of each.


State two characteristic properties of a gas.


Why do gases have neither a fixed shape nor a fixed volume?


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?


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.


A substance has neither a fixed shape nor a fixed volume. State whether it is a solid, a liquid or a gas.


Fig. I Fig. II

In figure-I, an air column of length ℓ1 is entrapped by a column of Hg of length 8 cm. In figure-II length of same air column at the same temperature is ℓ2. The `ℓ_1/ℓ_2` is:
(1 atm = 76 cm of Hg)


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.


Two gases A and B having molecular weights 60 and 45 respectively are enclosed in a vessel. The wt. of A is 0.50 g and that of B is 0.2 g. The total pressure of the mixture is 750 mm. The partial pressure of the gases B is ______ mm Hg.


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