The major constituent of noble gases present in atmospheric air (dry air) is :

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helium

neon

argon

xenon

answer is C.

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Detailed Solution

The most prevalent and widely used noble gas is argon. It is primarily used in metallurgy to create an inert environment in which hot metals can be worked. The extremely hot metal being welded or forged does not undergo chemical reactions because argon is inert gas.

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