The original copies of the Constitution of India are kept in the Parliament library in cases filled with which one of the following inert gases?
Helium
Nitrogen
Argon
Hydrogen
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UPSC Combined Section Officer – 2021-22
The original handwritten copies of the Constitution of India are preserved in the Parliament Library in New Delhi. They are stored in special cases filled with Helium gas to prevent degradation due to oxidation and humidity. Helium is a noble gas and is inert, making it ideal for long-term preservation of such valuable documents.