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प्रश्न
Define: interconversion of states of matter.
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उत्तर
The process by which matter changes from one state to another and back to original state, without any change in its chemical composition.
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संबंधित प्रश्न
Give reason:
When an empty gas jar is inverted over a gas jar containing a coloured gas, the gas also spreads into the empty jar.
Fill in the blank:
Liquids have a definite ............
Write whether the following statement is true or false.
There is no difference between evaporation and boiling.
Which one of the following statements is not true?
- the molecules in a solid vibrate about a fixed position
- the molecules in a liquid are arranged in a regular pattern
- the molecules in a gas exert negligibly small forces on each other, except during collisions
- the molecules of a gas occupy all the space available
Differentiate the general properties of solids, liquids and gases in the form of a table — with reference to density.
Give a reason why:
Gases have no definite volume and no definite shape.
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.
Give a reason why solids and liquids co-exist at their melting points.
Match the characteristics of the three states of matter in List I with their correct answer from List II.
| List I | List II |
| 1. Have no definite shape, volume or free surface | A: Solids only |
| 2. Are highly compressible and least rigid | B: Liquids only |
| 3. Have a definite volume, no definite shape and are slightly diffusable | C: Gases only |
| 4. Are not compressible and have no diffusability | D: Liquids and gases only |
| 5. Have mass and occupy space | E: Solids and gases only |
| F: Solids, liquids and gases |
Fill in the blank:
Particles in a gas possess ___________ kinetic energy.
