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प्रश्न
Give a reason why:
Gases have no definite volume and no definite shape.
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उत्तर
Any matter that is a gas has no definite volume and no definite shape. The molecules in a gas are least closely packed and intermolecular space between them is very large when compared to solids and liquids. The intermolecular force of attraction between the particles are negligible. As a result, a liquid does not easily change its shape nor they have fixed volume.
संबंधित प्रश्न
Which of the following are matter?
Chair, air, love, smell, hate, almonds, thought, cold, lemon water, smell of perfume.
What are the characteristics of particles of matter?
Give reason:
Why do liquids and gases flow but solids do not ?
Gases
- cannot be compressed easily,
- occupy the entire space of the container.
- have definite shapes.
- cannot flow.
What is mass ?
What is the relation between intermolecular space and intermolecular force ?
Give reason of A gas fills up the space available to it.
Even two or three crystals of potassium permanganate can impart colour to a very large volume of water. Which characteristic of particles of matter is illustrated by this observation?
A measuring cylinder is filled with water to a particular mark. A piece of solid is immersed inside the measuring cylinder. State why the level of water in the measuring cylinder will rise up. If the solid is removed, what will be the new level of the water in the measuring cylinder? Give a reason for your answer.
Differentiate the general properties of solids, liquids and gases in the form of a table — with reference to compressibility.
