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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
Answer the question put against the following constituents of air:
Nitrogen : Explain its significance for plants and animals.
Suggest five measures to prevent air pollution.
Give the chemical name of rust.
Fill in the blanks
Oxygen is used in ___________the food to get _______.
Write ‘true’ or ‘false for the following;
The major component of air is oxygen.
Explain why during an incident of fire, one is advised to wrap a woollen blanket over a burning object.
List out the uses of carbon dioxide.
_______ can be seen moving in a beam of sunlight in a dark room.
Solvay process is a method to manufacture
The solid form of CO2 is called dry ice which undergoes condensation.
