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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
The process of a gas converting directly into solid is called vaporization.
Evaporation takes place at ...............temperature.
Write true or false For the following Statement
The molecules in a substance arc in random motion.
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.
Give reason :
Why do liquids and gases flow but solids do not?
Fill in the blank
When a gas is cooled, its molecules .............. energy.
Give two examples for of the following
Substances which do not change their states.
Give two examples for each type of matter
All kinds of matter
Match the characteristics of the three states of matter in List I with their correct answer from List II.
| List I | List II |
| 1. Are highly rigid and have a definite shape | A: Solids and gases only |
| 2. Have no definite shape | B: Solids only |
| 3. Have definite volume but no definite shape | C: Liquids and gases only |
| 4. Are highly compressible and least rigid | D: Gases only |
| 5. Have no definite volume | E: Solid, liquids and gases |
| 6. Have no definite shape and volume |
F: liquids only |
| 7. Occupy space | G: Solids and liquids only |
| 8. Are not compressible | |
| 9. Are slightly compressible | |
| 10. Have mass |
