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प्रश्न
Name two gases which are supplied in compressed form in homes and hospitals.
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उत्तर
The two gases which are supplied in compressed form are:
- LPG (Liquefied petroleum gas) in homes and
- Oxygen in hospitals.
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संबंधित प्रश्न
Tabulate the differences in the characteristics of states of matter.
When an incense stick (agarbatti) is lighted in one corner of a room, its fragrance quickly spreads in the entire room. Name the process involved in this.
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When a gas jar full of air is placed upside down on a gas jar full of bromine vapours, the red-brown vapours of bromine from the lower jar go upward into the jar containing air. In this experiment :
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.
______ is not affected by gravity.
Comment upon the following:-
shape
Comment upon the following:-
density
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| Fig. I | Fig. II |
In figure-I, an air column of length ℓ1 is entrapped by a column of Hg of length 8 cm. In figure-II length of same air column at the same temperature is ℓ2. The `ℓ_1/ℓ_2` is:
(1 atm = 76 cm of Hg)
