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प्रश्न
Give a reason for the We need to classify things.
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उत्तर
We need to classify things in order to distinguish them. In this way, things can be categorized and can be easily studied.
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संबंधित प्रश्न
Write true or false for the following statement
In a gas, the molecules can move anywhere in space.
Fill in the blank
A solid is ............ rigid.
Give a reason for the Gases can be compressed easily.
Give reason :
Why do liquids and gases flow but solids do not?
Fill in the blank
Water is a matter because it has ............ and occupies ............
Write whether the following statement is true or false.
Only water can exist in three different states.
Name the phenomenon which cause the following change.
Conversion of water into steam.
What are the two main types of matter?
State what would you observe if
(a) sugar is added to pebbles take in a plastic beaker
(b) sand is added to glass balls in a beaker. What would you conclude from this imaginative demonstration?
State the correct term from A, B, C, D, E, or F in List II which represents the change of state of matter or its relevant property from List I.
| List I | List II |
| 1. Solid 'X' to a Liquid 'X' | A: Condensation |
| 2. Liquid 'Y' to its vapour 'Z' | B: Vaporization |
| 3. 'Z' to 'Y' | C: Melting |
| 4. 'Y' to 'X' | D: Freezing |
| 5. The temperature at which 'Y' changes to 'Z' | E: Melting point |
| F: Boiling point |
