A) \[{{O}_{2}}+He\]
B) \[{{O}_{2}}+Xe\]
C) \[{{O}_{2}}+Ar\]
D) \[{{O}_{2}}+{{N}_{2}}\]
Correct Answer: A
Solution :
Helium- oxygen mixture is used by deep sea divers because of its very low solubility in blood.
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