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MHT CET202122 Sep 2021Evening ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Identify use of argon from following.

Options

  1. AIn supersonic wind tunnels
  2. BFor magnetic resonance imaging
  3. CFor producing inert atmosphere in welding
  4. DFor production of lasers

Correct answer

C. For producing inert atmosphere in welding

Step-by-step solution

Argon is used in the welding of specialty alloys as well as in the welding of automobile frames, mufflers and other automotive parts. It is called a shield gas because it does not react with whatever gases and metals are hovering in the vicinity of the metals being welded; it merely takes up space and prevents other, unwanted reactions from occurring nearby owing to reactive gases such as nitrogen and oxygen.

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