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प्रश्न
Mountaineers carry oxygen cylinders with them because ______.
विकल्प
there is no oxygen on high mountains.
there is deficiency of oxygen on mountains at high altitude.
oxygen is used for cooking.
oxygen keeps them warm at low temperature.
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उत्तर
Mountaineers carry oxygen cylinders with them because there is deficiency of oxygen on mountains at high altitude.
Explanation:
With 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, while climbing high mountains, mountaineers carry oxygen cylinders with them.
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