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प्रश्न
What is the composition of air?
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उत्तर
Air is a mixture of 79% nitrogen, 20% oxygen, 1% carbon dioxide, water vapours, and some other gases. Air also contains dust particles.
संबंधित प्रश्न
What do you observe when Calcium is heated and then tested with moist blue and red litmus – paper?
With the help of a labeled diagram, describe a simple experiment to show the presence of oxygen and nitrogen in air using a piece of white phosphorus.
You are given a test tube with two outlets and a bottle of lime water. Using same, how would you demonstrate experimentally the presence of carbon dioxide in air.
Give a reason why water droplets appear on the outer surface of a tumbler containing ice.
State what would happen, if the air above the earth contained mainly oxygen and no nitrogen
Name the following:
The main, rare (inert) gas present in air.
Carbon dioxide gas is ______ in nature.
Oxygen is used to oxidize ______.
Match the following
| 1. | Oxygen | a. | Carbon dioxide |
| 2. | Azote | b. | Nitrogen |
| 3. | Solvay process | c. | Vital life |
| 4. | Gun powder | d. | No life |
What is not true about air?
