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प्रश्न
Give two example of the following:
The substances which sublime.
उत्तर
Camphor, iodine, naphthalene, ammonium chloride, dry ice (solid carbon dioxide), etc.
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संबंधित प्रश्न
Give reasons:
Solids cannot be compressed.
Give reason:
Why do liquids and gases flow but solids do not ?
Fill in the blank
Molecules in a ________ are packed very closely.
When an incense stick (agarbatti) is lighted in one corner of a room, its fragrance spreads in the whole room quickly. Which characteristic of the particles of matter is illustrated by this observation?
On what basis are the three states classified of matter.
Differentiate the general properties of solids, liquids and gases in the form of a table — with reference to space.
Match the characteristics of the three states of matter in List I with their correct answer from List II.
| List I | List II |
| 1. Have no definite shape, volume or free surface | A: Solids only |
| 2. Are highly compressible and least rigid | B: Liquids only |
| 3. Have a definite volume, no definite shape and are slightly diffusable | C: Gases only |
| 4. Are not compressible and have no diffusability | D: Liquids and gases only |
| 5. Have mass and occupy space | E: Solids and gases only |
| F: Solids, liquids and gases |
Give a reason for the following:
Liquids have one free upper surface only.
Complete the blank with reference to interconversion of matter on the basis of kinetic theory-with the word ‘increase’, ‘decreases’, ‘gain’, ‘lose’, or ‘overcome’ in the following case.
During soldification, the inter-particle space __________ gently.
Among the following ______ is not a mixture.
