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प्रश्न
Fill in the blank:
The three states of matter are classified on the basis of differences of certain _________.
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उत्तर
The three states of matter are classified on the basis of differences of certain physical.
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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.
Give reason:
A red ink drop added to small amount of water in a glass turns water red in some time.
Fill in the blank:
All matter is made up of tiny particles called..................
Match the columns.
| (1) iron and gold | (a) molecules are very far apart |
| (2) melting | (b) pure substance |
| (3) intermolecular space | (c) non - metals |
| (4) compound | (d) the space between the molecules |
| (5) gases | (e) change from solid to liquid |
| (f) metals |
Fill in the blank :
Air is a matter because it has ________ and _______ and it can be _________
Bromine particles are almost twice as heavy as chlorine particles. Which gas will diffuse faster; bromine (vapour) or chlorine? Explain your answer.
Give reasons for the following:
Water on freezing turns into ice.
Give a reason why:
Gases have no definite volume and no definite shape.
Match the following.
| Property | Example |
| Breaks easily (Brittle) | Metal pan |
| Bends readily | Rubber band |
| Can be stretched easily | Cotton wool |
| Gets compressed easily | Mud pot |
| Gets heated readily | Plastic wire |
You are provided with a mixture of naphthalene and ammonium chloride by your teacher. Suggest an activity to separate them with well labelled diagram.
