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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 :
Water vapours : Explain their role in modifying the earth’s climate.
Explain the conversion of nitrogen into nitrates during lightning.
Complete and balance the following chemical equation.
CaO + H2O → ____________
Fill in the blanks :
_______ and ______ are the most common air pollutants.
Write fully balanced equation for the following :
CO2 + H2O →
State the utility of oxygen for respiration in living organisms
Name the following:
The type of bacteria which directly absorb nitrogen from the air and converted soluble nitrates in the soil.
Tabulate the various components of air, including the components with variable composition.
All living things use oxygen for breathing.
Venus's atmosphere consists of roughly 96 – 97% of ______.
