Advertisements
Advertisements
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.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
What is air pollution ? What are the harmful effects of sulphur dioxide, nitrogen dioxide and hydrogen sulphide present in the air ?
What are the two ways in which nitrogen fixation occurs?
Tick (√) the most appropriate answer.
A gas which dilutes the activity of oxygen in air is:
Name and briefly explain four ways by which pollution of air caused by humans is minimised.
What are the two necessary conditions for rusting of iron?
Give word equation for the following conversion:
Nitrogen dioxide to nitric acid
Air is a mixture of many _______.
Match the following
| 1. | Moving Air | Photosynthesis |
| 2. | Layer in which we live | Troposphere |
| 3. | Stratosphere | Wind |
| 4. | Oxygen | Ozone layer |
| 5. | carbon-di-oxide | Combustion |
How will you prove that air supports burning?
Carbon dioxide gas is ______ in nature.
