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प्रश्न
Fill in the blank:
The gas evolved as a product of combustion as well as respiration is ______.
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उत्तर
The gas evolved as a product of combustion as well as respiration is carbondioxide.
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संबंधित प्रश्न
Fill in the blank:
_____________ discovered the oxygen gas.
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 a brief account of the discovery of air and the scientists involved.
What will happen if the number of vehicles and factories in your surroundings increases?
Name the following.
Gases that are harmful to the ozone layer
What will happen if the amount of water vapour in the air increases.
Name the important scientists and their studies which led to the discovery of the components of air.
Match the statements in List I with the correct answer from List II.
| List I | List II |
| 1. The constituent of air which is around 0.02% | A: Nitrogen |
| 2. The constituent of air which is inert or unreactive | B: Oxygen |
| 3. The constituent of air which is non-combustible, but supports combustion. |
C: Sulphur dioxide |
| 4. A pollutant in air responsible for acid rain | D: Carbon dioxide |
| 5. The main rare gas present in air. | E: Argon |
Air has variable composition and hence there is ______ oxygen at lower altitudes than at higher altitudes.
A list of words is given in a box. Use appropriate words to fill up the blank in the following statement.
The ______ makes the windmill rotate.
