Helium is used with oxygen in the apparatus of divers because it

Question

Helium is used with oxygen in the apparatus of divers because it (A) is lighter than nitrogen (B) is not soluble in blood at high pressure (C) is easily available (D) is less reactive than nitrogen

Tardigrade Admin · Accepted Answer

Oxygen, helium (1:4) mixture is used for treatment of asthma and for artificial respiration in deep sea diving because unlike nitrogen. He is not soluble in blood even under high pressure.

Q. Helium is used with oxygen in the apparatus of divers because it

is lighter than nitrogen

is not soluble in blood at high pressure

is easily available

is less reactive than nitrogen

Oxygen, helium $(1 : 4)$ mixture is used for treatment of asthma and for artificial respiration in deep sea diving because unlike nitrogen.
$He$ is not soluble in blood even under high pressure.