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प्रश्न
There are large intermolecular gaps in
पर्याय
water
iron ball
common salt
air
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उत्तर
air
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संबंधित प्रश्न
Fill in the blank:
The change of water vapour into water is called ......................
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.
Give two examples of the following:
Substances which are rigid and not compressible.
All kinds of matter
- occupy space and have definite mass
- have mass and definite shape
- can change their states
- have definite volume
Fill in the blank:
The quantity of matter in an object is called its _____
Fill in the blank
When a gas is cooled, its molecules ________ energy,
When a beam of sunlight enters a room through a window, we can see tiny particles X suspended in a gas (or rather a mixture of gases) Y which are moving rapidly in a very haphazard manner.
- What could particles X be ?
- Name the gas (or mixture of gases) Y.
- What is the phenomenon exhibited by particles X known as ?
- What is causing the movement of particles X ?
- What conclusion does the existence of this phenomenon give us about the nature of matter ?
State the term which refers to the conversion of a substance on heating from.
- solid-state to liquid state
- liquid state to vapour state
- vapour state to liquid state
- liquid state to solid-state.
In which of the three states of matter – solids, liquids, or gases is the movement of atoms about their own position. Give a reason for the same.
Water obtained from tube wells is usually ______ water.
