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प्रश्न
For the following statement, say whether it describes a solid, a liquid, or a gas.
Particles move about very quickly.
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उत्तर
Liquid
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संबंधित प्रश्न
Boiling takes place at all temperatures.
Evaporation takes place at ...............temperature.
Fill in the blank
A solid is ............ rigid.
Give the molecular model for a solid and use it to explain why a solid has a definite volume and a definite shape.
A gas has neither a definite volume nor a definite shape. Describe the molecular model to explain it.
Give two examples for of the following
Substances which sublime.
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?
Fill in the blank with the correct word Given below.
Brownian movement is maximum in ____.
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 |
For removing grains from stalks, the ______ method is used.
