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प्रश्न
What do you observe when a gas jar which appears empty is inverted over a gas jar containing Bromine vapours? Name the phenomenon.
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उत्तर
When a gas jar full of bromine vapours (reddish brown) is inverted over a gas jar containing air over it. It is observed that after sometime, the reddish brown vapours of bromine also spread out into the upper jar. This mixing is called diffusion. The rate of diffusion is the fastest in gases and the slowest in solids. It increases with an increase in temperature.
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संबंधित प्रश्न
Why do solids, liquids and gases differ in their physical states ?
Write true or false for statement. Rewrite the false statement correctly.
Solids and liquids can flow.
For the following statement, say whether it describes a solid, a liquid or a gas.
Particles are far apart and move in all directions.
Name the phenomenon which cause the following change:
Conversion of ice into water.
There are large intermolecular gaps in
- water
- iron ball
- common salt
- air
What happens when a solid is heated ?
Write whether the following statement are true or false.
Solids have the largest inter-molecular space.
Give reasons for the following:
Water on freezing turns into ice.
Give a reason why –
Liquids have a definite volume but no definite shape.
Give a reason why:
Gases have no definite volume and no definite shape.
