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प्रश्न
Name three noble gases present in the air. State their one industrial use
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उत्तर
Three noble gases present in the air are :
- Helium : It is used for filling weather observation balloons.
- Argon : It is used for filling electric bulbs at low pressure.
- Neon : It is used for making advertising glow tubes, used on big shops, hotels etc. at night.
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संबंधित प्रश्न
Name the components of air with their approximate percentage by volume in air. Does the percentage by volume of each component remain the same, in the atmosphere of different parts of the world? Explain with reasons.
Give a reason why nitrogen is filled in food packets and not oxygen.
Complete the statement given below by filling in the blank with the correct word from the words given:
The product formed which is common to both combustion and respiration is ______.
What is the source of carbon dioxide in air?
______ is the percentage of nitrogen in air.
Inhaled air contains a large amount of carbon-di-oxide.
The balance of oxygen in atmosphere is maintained through photosynthesis in animals and respiration in plants.
When cooled to -57°C, gaseous carbon-di-oxide becomes a liquid.
Match the following
| 1. | Oxygen | a. | Carbon dioxide |
| 2. | Azote | b. | Nitrogen |
| 3. | Solvay process | c. | Vital life |
| 4. | Gun powder | d. | No life |
Nitrogen is an essential element present in proteins and nucleic acids which are the building blocks of living things.
