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प्रश्न
A list of words is given in a box. Use appropriate words to fill up the blank in the following statement.
Air is a ______ of some gases.
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उत्तर
Air is a mixture of some gases.
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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 observeation balloons. | (b) Carbonic acid |
| 3. An acid formed by the dissolution of sulphur dioxide gas in water. | (c) Sulphuric acid |
| 4. An acid formed by the dissolution of carbon dioxide in water. | (d) Helium |
| 5. A gas vital for respiration. | (e) Nitrogen |
What do you observe when a beam of light is allowed to enter in a closed dark room through a small hole.
Write the chemical name of The white insoluble solid formed on the reaction of carbon dioxide with lime water.
Fill in the blank
Air is a ______ of gases
What is meant by the term ‘atmosphere’? State the role played by the atmosphere for the survival of mankind.
Name the following.
Inert gases in the air
Name the important scientists and their studies which led to the discovery of the components of air.
Fill in the blank:
The gas evolved as a product of combustion as well as respiration is ______.
Fill in the blank:
Rusting is a chemical reaction which involves _____ oxidation.
Do sailors need the help of wind to sail?
