Anoxia, observed in high-altitude climbers, is best explained by:
AExcessive CO₂ at altitude
BLow temperature reducing haemoglobin function
CHigh humidity
DLow partial pressure of O₂ at altitude → low O₂ solubility in blood → poor oxygenation
Answer & Solution
Correct answer: D. Low partial pressure of O₂ at altitude → low O₂ solubility in blood → poor oxygenation
At altitude, **atmospheric pressure (and thus pO₂) is lower**. By Henry's law, dissolved O₂ in blood drops → tissues are oxygen-starved → **anoxia** (weakness, confusion).
Related questions
The mass of NaOH (M = 40 g/mol) required to prepare 500 mL of a 0.20 M NaOH solution isWhich of these solutions will boil at the highest temperature at 1 atm?The molality of a 1 M aqueous NaCl solution (density = 1.04 g/mL, NaCl M = 58.5 g/mol) is Osmotic pressure π of a dilute solution obeys π = C R T. Here C representsVan't Hoff factor i > 1 for a solute indicatesA negative deviation from Raoult law is expected whenIf a solute dimerises in solution, its observed molar mass compared with the calculated vaWhich of the following is NOT a colligative property?