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प्रश्न
What are fluids ? Give two examples.
एक पंक्ति में उत्तर
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उत्तर
Substances that can flow are called fluids, e.g. gases (oxygen, hydrogen), liquids (water, petrol, sulphuric acid).
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Composition of Matter
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संबंधित प्रश्न
State three main characteristics of the particles of matter.
Define: Liquid.
Give reason Pure substances have fixed melting or boiling point .
Describe a simple experiment to illustrate the existence of inter-molecular spacing.
Define matter.
Write your observation and conclusion for the following:
When a small stone is gently dipped into a glass filled with water.
Differentiate between the following:
Atoms and molecules
Write whether the following statement is true or false.
Solids have the largest inter-molecular space.
Match the column.
| Column A | Column B |
| 1. iron and gold | a. molecules are very far apart |
| 2. melting | b. pure substance |
| 3. intermolecular space | c. non-metals |
| 4. compound | d. the space between the molecules |
| 5. gases | e. changes from solid to liquid |
| f. metals |
Multiple choice question.
Which one is a kind of matter:
