Class 6 Exam > Class 6 Questions > Mountaineers carry oxygen cylinders with them...
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Mountaineers carry oxygen cylinders with them because
- a)oxygen supports combustion.
- b)oxygen is less at higher altitudes.
- c)more oxygen is needed to cook food.
- d)oxygen does not support combustion.
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Mountaineers carry oxygen cylinders with them becausea)oxygen supports...
The density of air decreases with altitude, so the oxygen needed for breathing also decreases and becomes difficult to breathe. Hence, mountaineers carry oxygen cylinders.
Most Upvoted Answer
Mountaineers carry oxygen cylinders with them becausea)oxygen supports...
Mountaineers carry oxygen cylinders with them because:
1. Oxygen is less at higher altitudes:
At higher altitudes, the air becomes thinner and contains less oxygen. As a result, the concentration of oxygen in the air decreases. This can lead to a condition called hypoxia, where the body does not receive enough oxygen to function properly. Mountaineers need to carry oxygen cylinders to supplement the reduced oxygen levels and prevent hypoxia.
2. Oxygen supports combustion:
Although oxygen does support combustion, it is not the primary reason why mountaineers carry oxygen cylinders. The main purpose is to provide sufficient oxygen for breathing rather than for supporting combustion.
3. More oxygen is needed to cook food:
While it is true that oxygen is required for combustion and cooking food, the amount of oxygen needed for cooking is relatively small compared to the amount needed for breathing. Mountaineers primarily carry oxygen cylinders for their own respiratory needs, rather than for cooking food.
4. Oxygen does not support combustion:
This statement is incorrect as oxygen does support combustion. It is a key component of the fire triangle, along with heat and fuel. However, the question is asking for the main reason why mountaineers carry oxygen cylinders, and it is not primarily related to combustion.
In summary, the correct answer is option 'B' - Mountaineers carry oxygen cylinders with them because oxygen is less at higher altitudes. This is to compensate for the reduced oxygen levels at higher altitudes and prevent hypoxia.
1. Oxygen is less at higher altitudes:
At higher altitudes, the air becomes thinner and contains less oxygen. As a result, the concentration of oxygen in the air decreases. This can lead to a condition called hypoxia, where the body does not receive enough oxygen to function properly. Mountaineers need to carry oxygen cylinders to supplement the reduced oxygen levels and prevent hypoxia.
2. Oxygen supports combustion:
Although oxygen does support combustion, it is not the primary reason why mountaineers carry oxygen cylinders. The main purpose is to provide sufficient oxygen for breathing rather than for supporting combustion.
3. More oxygen is needed to cook food:
While it is true that oxygen is required for combustion and cooking food, the amount of oxygen needed for cooking is relatively small compared to the amount needed for breathing. Mountaineers primarily carry oxygen cylinders for their own respiratory needs, rather than for cooking food.
4. Oxygen does not support combustion:
This statement is incorrect as oxygen does support combustion. It is a key component of the fire triangle, along with heat and fuel. However, the question is asking for the main reason why mountaineers carry oxygen cylinders, and it is not primarily related to combustion.
In summary, the correct answer is option 'B' - Mountaineers carry oxygen cylinders with them because oxygen is less at higher altitudes. This is to compensate for the reduced oxygen levels at higher altitudes and prevent hypoxia.
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Mountaineers carry oxygen cylinders with them becausea)oxygen supports combustion.b)oxygen is less at higher altitudes.c)more oxygen is needed to cook food.d)oxygen does not support combustion.Correct answer is option 'B'. Can you explain this answer?
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