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प्रश्न
Give reason of We can walk through air.
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उत्तर
The molecules of air are far apart i.e. large gaps and we can walk through air easily.
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संबंधित प्रश्न
Define interconversion of states of matter. What are the two factors responsible for the change of states of matter?
Give two example of the following:
The substances which sublime.
Give two example of the following:
The substances which do not change their state on heating.
Write whether the following statement is true or false.
Intermolecular force of attraction is greater in gases than in liquids.
Give two examples of the following:
Substances which are rigid and not compressible.
A solid is a state of matter that has
- no definite shape.
- large intermolecuiar space.
- high intermolecuiar force of attraction.
- no definite volume.
A piece of chalk can be broken into small particles by hammering but a piece of iron cannot be taken into small particles by hammering. Which characteristic of the particles of matter is illustrated by these observations?
Which of the following statement is incorrect?
Give a reason why solids and liquids co-exist at their melting points.
Which one of the following element name is not derived from planet?
