The Earth's atmosphere contains 9% nitrogen and 21% oxygen. The remaining one percent contains many gases. But there are six gases that are very useful to us. And is innocent. Gases called helium, neon, agorn, krypton, xenon and radin are also called 'noble gases'.
Nobel gas is not affected by the atmosphere and does not chemically react with other substances. These gases have no color or smell. It always remains in the form of air. They do not become liquid even in severe cold weather.
Noble gas is released when air is cooled in a laboratory and turned into a liquid. These gases obtained in this way can be used in various tools.
The use of helium gas is known in helium balloons. Neon and argon are used in colored tube lights or colored lamps. Radon gas is toxic. It is used to check the presence of water in the soil, welding of iron. Krypton air is used to make fireproof doorways and walls. Xenon gas is used in brightly lit arclights.
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