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Helium-oxygen mixture is used by deep sea divers in preference to nitrogen-oxygen mixture because

Options

  1. Ahelium is much less soluble in blood than nitrogen
  2. Bnitrogen is much less soluble in blood than helium
  3. Cdue to high pressure deep under the sea nitrogen and oxygen react to give poisonous nitric oxide
  4. Dnitrogen is highly soluble in water

Correct answer

A. helium is much less soluble in blood than nitrogen

Step-by-step solution

In blood, He is much less soluble than nitrogen, hence He - O ₂ mixture is used by deep sea divers in preference to N ₂- O ₂ mixture.

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