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प्रश्न
Draw a neat labelled diagram for the following experiment.
To prepare oxygen in the laboratory from hydrogen peroxide and a catalyst.
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उत्तर
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संबंधित प्रश्न
Match the statements in Column A, with those in Column B.
| Column A | Column B |
| 1. Largest Constituent of air, which dilutes the activity of oxygen. |
(a) Oxygen |
| 2. A gas used for filling weather observation balloons. | (b) carbon acid |
| 3. An acid formed by the dissolution of sulphur dioxide gas in water. | (c) Sulphur acid |
| 4. An acid formed by the dissolution of carbon dioxide in water. | (d) Helium |
| 5. A gas vital for respiration. | (e) Nitrogen |
Give two uses of the following component present in air:
carbon dioxide
Define rusting?
Tick (√) the correct alternative from the choice given for the following statement.
Respiration
How is light scattered by the air?
Draw a neat labelled diagram for the following experiment.
To prove that oxygen is non-combustible, but supports combustion.
What should be done if the clothes of a person catch fire accidentally? Why?
State whether the following statement is true or false. If false, correct them.
Air does not occupy any space.
In a number of musical instruments, air plays an important role. Can you name some such instruments?
Make sentences using the given set of words.
Air, wind, motion, called
