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प्रश्न
Name the following:
The main, rare (inert) gas present in air.
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उत्तर
Argon
संबंधित प्रश्न
Answer the question put against the following constituents of air :
Oxygen : What is the percentage proportion of oxygen in air ? Why is oxygen called active air.
Name three noble gases present in the air. State their one industrial use
Give reason:
When water is heated, we see bubbles rising up.
Match the statements in List 1 with the correct answers in List 2
| List 1 | List 2 | ||
| 1 | An impurity in air | A | Water vapour |
| 2 | The component of air which supports combustion | B | Respiration |
| 3 | The inert component in the air slightly soluble in water | C | Rare gases |
| 4 | The component of air which minimizes the rate of evaporation | D | Sulphur dioxide |
| 5 | The process which involves oxidation of food substance in living organisms | E | Helium |
| 6 | The component of air which finds application in observation balloons | F | Carbon dioxide |
| 7 | The process which involves oxidation of substances, liberating heat and light energy | G | Combustion |
| 8 | The component of air which is heavier than air and fairly soluble in water | H | Nitrogen |
| 9 | The process by which atmospheric carbon dioxide is absorbed by plants resulting in the formation of carbohydrates | I | Photosynthesis |
| 10 | The component of air which is lighter than air and less than 1% in air | J | Oxygen |
Name the following:
The product formed when phosphorus burns in oxygen.
What is the percentage of oxygen in air?
_______ can be seen moving in a beam of sunlight in a dark room.
______ present in the air is needed for respiration.
Venus's atmosphere consists of roughly 96 – 97% of ______.
Which of the following components of air is present in the largest amount in the atmosphere?
