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प्रश्न
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.
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उत्तर
- When the glass plate between the two jars is pulled away then the red brown gas will diffuse from jar A into colourless jar B and vice versa, due to which the red brown colour will spread into jar B.
- The phenomenon occurring here is diffusion.
- Bromine vapour.
- Air.
- Potassium permanganate (coloured solid) and water (colourless liquid) also show the same phenomenon.
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संबंधित प्रश्न
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(density = mass/volume).
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air, exhaust from chimneys, honey, water, chalk, cotton and iron.
Give reasons:
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Name two gases which are supplied in compressed form in homes and hospitals.
Fill in the following blank with suitable words :
At room temperature, the forces of attraction between the particles of solid substances are ....................... then those which exist in the gaseous state.
State two characteristic properties of a gas.
Explain why, when a bottle of perfume is opened in a room, we can smell it even from a considerable distance.
A student placed a gas jar containing air in the upside down position over a gas jar full of red-brown bromine vapours. He observed that the red-brown colour spread upwards into the jar containing air. Based on this observation, the student concluded that it is only the bromine vapour which moves up and diffuses into air in the upper jar, the air from the upper jar does not move down by diffusion into the lower jar containing bromine vapours. Do you agree with this conclusion of the student? Give reason for your answer.
______ is not affected by gravity.
Comment upon the following:-
compressibility
Which of the following is TRUE about gaseous state?
