Advertisements
Advertisements
प्रश्न
Give a reason why two different rare (inert) gases find application in advertisement signs and fluorescent bulbs.
Advertisements
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
Name and briefly explain four ways by which pollution of air caused by humans is minimised.
Classify Calcium oxide. Also give a balanced equation to prepare it.
Complete and balance the following equation
CaO + H2O →
Write ‘True’ or ‘False’ in front of following statement.
Enamelling is the process of baking a mixture of silicates on the surface of aluminium at a high temperature.
With the help of a labeled diagram, describe a simple experiment to show the presence of oxygen and nitrogen in air using a piece of white phosphorus.
Name the following:
The product of respiration released in exhaled air, other than carbon dioxide.
What happens if the percentage of oxygen in the air reaches to 70%?
______ gas is given to the patients having breathing problems.
The main component of air is oxygen.
Air contains a small amount of CO2, Water vapour, and some other gases like ______, etc.
