Question

59 Mountainers carry oxygen cylinders with them because

• A. there is no oxygen in high mountains
• B. there is a deficiency of oxygen in mountains at higher altitudes
• C. oxygen is used for cooking
• D. oxygen keeps them warm at low temperature

Answer 1

The correct option is B

there is a deficiency of oxygen in mountains at higher altitudes

The explanation for the correct option:

(B) Mountaineers carry an oxygen cylinder with them-

• Altitude increases as mountaineers climb high mountain peaks
• As altitude rises, the amount of oxygen available decreases. Because trees are not available at high elevations, the amount of oxygen gas in the atmosphere decreases.
• As a result, some regions of their bodies do not receive enough oxygen gas.
• Dizziness and hypoxia are possible side effects.

Final answer: A correct answer is an option (B)