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MHT CET202523 Apr 2025Morning ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Which of the following inert gases is used for magnetic resonance imaging?

Options

  1. AHe
  2. BNe
  3. CAr
  4. DXe

Correct answer

A. He

Step-by-step solution

The correct answer is A) He. Magnetic Resonance Imaging (MRI) machines utilize powerful superconducting magnets that require cooling to approximately 4 Kelvin to maintain their superconducting state. Liquid helium serves as the optimal cryogenic coolant due to its exceptionally low boiling point of 4.2 K at atmospheric pressure, which is capable of achieving these ultra-low temperatures. Its inert nature prevents chemical reactions with MRI components. Other inert gases—neon, argon, and xenon—have significantly hig

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