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प्रश्न
Comment upon the following:-
fluidity
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उत्तर
Fluidity is the ability to flow.
संबंधित प्रश्न
The mass per unit volume of a substance is called density.
(density = mass/volume).
Arrange the following in order of increasing density-
air, exhaust from chimneys, honey, water, chalk, cotton and iron.
Give reasons:
A gas exerts pressure on the walls of the container.
A bottle of perfume was opened in a room. The smell of its vapours spread in the entire room. Name the property of gases which is responsible for this behaviour of perfume vapours.
Name the three states of matter. Give one example of each.
What does the diffusion of gases tell us about their particles?
Look at the diagram on the right side. Jar A contains a red-brown gas whereas jar B contains a colourless gas. The two gas jars are separated by a galas plate placed between them
- What will happen when the glass plate between the two jars is pulled away?
- What name is given to the phenomenon which takes place?
- Name the brown gas which could be in jar A.
- Which is the colourless gas most likely to be present in jar B?
- Name one coloured solid and one colourless liquid which can show the same phenomenon.
A substance has neither a fixed shape nor a fixed volume. State whether it is a solid, a liquid or a gas.
Comment upon the following:-
shape
Which of the following is false for gases?
Explain why?
- A gas fills a vessel completely?
- Camphor disappears without leaving any residue.
