Mountaineers carry oxygen cylinders with them because
(a) there is no oxygen on high mountains
(b) there is deficiency of oxygen on mountains at high altitude
(c) oxygen is used for cooking
(d) oxygen keeps them warm at low temperature.

AcademicChemistryNCERTClass 6

Correct Answer: (b) there is deficiency of oxygen on mountains at high altitude

Explanation: Due to the increase in altitude, the atmosphere gets thinner and the supply of oxygen is reduced. This causes difficulty in breathing on hill stations and mountains. Therefore, mountaineers carry oxygen cylinders with them while climbing the mountains.

raja
Updated on 10-Oct-2022 13:20:15

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