Question

The inert gas which is substituted for nitrogen in the air, used by deep sea drivers for breathing is:
A. Helium B. Argon C. Krypton D. Xenon

Answer 1

Answer:

Helium

Explanation:

Heliox is a mixture of oxygen and helium and is often used in the deep phase of a commercial deep dive to eliminate nitrogen narcosis. Heliair is a form of trimix that is easily blended from helium and air without using pure oxygen. It always has a 29:79 ratio of oxygen to nitrogen ;the balance of the mix is helium.