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प्रश्न
Give a reason why two different rare (inert) gases find application in advertisement signs and fluorescent bulbs.
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उत्तर
- Neon – In neon sign advertisements A brilliant red glow is seen on the passage of an electric current through neon gas at low pressure. The colour can be changed by mixing mercury vapour and argon with neon.
- Xenon – In fluorescent bulbs flash bulbs and lasers. It emits intense white light in discharge tubes.
संबंधित प्रश्न
Describe a simple experiment to show that l/5th of air is oxygen.
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphurUioxide gas, precipitation, helium
_______ gas is used for filling weather observation balloons.
Statement given below is incorrect. Write the correct statement :
Helium gas at low pressure is used for filling electric bulbs.
Name three noble gases present in the air. State their one industrial use
Name three different appliances where air is utilized.
Complete the statement given below by filling in the blank with the correct word from the words given:
The component of air used in photosynthesis is ______ and the products of photosynthesis is oxygen.
Why is carbon-dioxide gas used to extinguish fire?
How will you prove that air supports burning?
What is the presence of harmful substance in the air called?
Carbon dioxide gas is ______.
