Advertisements
Advertisements
Question
Mountaineers carry oxygen cylinders with them because ______.
Options
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
Solution
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
RELATED QUESTIONS
Describe a simple experiment to show that l/5th of air is oxygen.
Define the following:
Combustion.
The diagrams below represents an experiment to show the presence of a component of air.
- State why air is sucked from – outlet ‘B’ and not from outlet “A”
- State why the air is sucked ‘slowly’ from the outlet “B”
- State the observation seen after completion of the experiment.
- State the reason for the above observation seen.
- Name another component which if present in air as a pollutant would have given a similar observation
What is the source of carbon dioxide in air?
Explain why mountaineers carry oxygen cylinders with them?
______ is the active component of air.
______ is the main component of air.
All living things use oxygen for breathing.
During respiration, carbon-di-oxide is exhaled out of the body through the ______.
On a Sunday morning Paheli’s friend visited her home. She wanted to see some flowering plants in the nearby garden. Both of them went to the garden. While returning from the garden they also observed some flowering plants on the road side. But to their surprise they found that the leaves and flowers of these roadside plants were comparatively very dull. Can you help them to know why?
