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Helium-oxygen mixture is used by deep se...

Helium-oxygen mixture is used by deep sea divers in the presence of nitrogen-oxygen mixture because

A

hellium is much less soluble in blood than nitrogen

B

nitrogen is much less soluble in blood than helium

C

due to high pressure deep under the sea, nitrogen and oxygen react to give poisonous nitric oxide

D

nitrogen is highly soluble in water

Text Solution

Verified by Experts

The correct Answer is:
A
He-`O_(2) (80% - 20%)` mixture is used by deep sea divers for artificial respiration . Because of low intermolecular force in He , it is much less soluble in aqueous solutions (as compared to `N_(2)` ) such as blood and does not cause "caisson sickness " or "bends" by bubbling out of blood when the worker moves from high pressure (while in deep sea) to atmospheric pressure .
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