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Question

Helium is added to the oxygen supply of deep sea divers because it is __________

This question was previously asked in
SSC CGL 2016 (Tier 1) Previous Year Question Paper (11-Sep-2016) (Shift 2)
The correct answer is

less soluble in blood than nitrogen at high pressure

Helium is added to the oxygen supply for deep-sea divers because it is less soluble in blood than nitrogen at high pressure, reducing the risk of nitrogen narcosis. Therefore, the correct answer is "less soluble in blood than nitrogen at high pressure."

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