Question

    Which inert gas is used as a substitute for nitrogen in

    air for deep-sea divers?
    A Xenon Correct Answer Incorrect Answer
    B Helium Correct Answer Incorrect Answer
    C Argon Correct Answer Incorrect Answer
    D Krypton Correct Answer Incorrect Answer

    Solution

    Helium is preferred for deep-sea diving because it is inert, has a low narcotic effect under pressure (unlike nitrogen), and reduces the risk of nitrogen narcosis. However, divers must still manage decompression sickness, as helium can dissolve in tissues under high pressure.

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