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प्रश्न
Give two examples for of the following
Substances which sublime.
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उत्तर
Naphthalene, camphor, dry ice.
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संबंधित प्रश्न
State three characteristics of molecules of matter.
Classify the following into solids, liquids, and gases. Oxygen, milk, common salt, wax, stone, water vapour, carbon-dioxide, sugar, mercury, coal, blood, butter, copper, coconut oil, kerosene.
Fill in the blank
Water is a matter because it has ............ and occupies ............
Fill in the blank
Liquids have a definite ............
Fill in the blank
The temperature at which a liquid boils is called the ................. point of that liquid.
Fill in the blank
When a gas is cooled, its molecules .............. energy.
Name the phenomenon which cause the following change.
Disappearance of camphor.
Give two examples for each type of matter
Match the following
| Column A | Column B | ||
| a | Solids | 1 | Can flow in all directions |
| b | Sublimination | 2 | The temperature at which a liquid changes into its gaseous state |
| c | Boiling Point | 3 | Can have any number of free surfaces |
| d | Gases | 4 | Gaps between particles |
| e | Intermolecular space | 5 | Change of state from solid to gas |
State the property of the following substance.
Hydrogen sulphide gas has a strong rotten egg odour.
