A. Argon
B. Xenon
C. Helium
D. Krypton
Submitted by: Rashid Mehmood
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 21:79 ratio of oxygen to nitrogen; the balance of the mix is helium.
Correct Answer: Helium ✔
Last Updated: January 08, 2020