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78% of nitrogen, 16% of oxygen and 3.5% of carbon dioxide gas in air is present at which of the following situations?
- a)At the forest
- b)Near a park
- c)Exhaled air in a room
- d)Near a nursery
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
78% of nitrogen, 16% of oxygen and 3.5% of carbon dioxide gas in air i...
The correct answer is option 'C' - exhaled air in a room.
Explanation:
Air is made up of various gases, including nitrogen, oxygen, and carbon dioxide. The percentages mentioned in the question represent the composition of these gases in the air. Let's analyze each option to understand which situation matches these percentages.
a) At the forest:
In a forest, the air is primarily composed of nitrogen, oxygen, and other gases. However, the percentages mentioned in the question (78% nitrogen, 16% oxygen, and 3.5% carbon dioxide) are not typical for the air in a forest. Therefore, option 'a' is not the correct answer.
b) Near a park:
The air near a park is similar to the air in other outdoor environments. It consists of approximately 78% nitrogen, 21% oxygen, and a small percentage of other gases, including carbon dioxide. The percentages mentioned in the question do not match the composition of air near a park. Therefore, option 'b' is not the correct answer.
c) Exhaled air in a room:
When we breathe out, the air we exhale contains a higher concentration of carbon dioxide compared to the air we inhale. The percentages mentioned in the question (78% nitrogen, 16% oxygen, and 3.5% carbon dioxide) closely match the composition of exhaled air. This is because we inhale air with a similar composition to the atmosphere, but when we exhale, we release carbon dioxide that our bodies have produced. Therefore, option 'c' is the correct answer.
d) Near a nursery:
The air near a nursery, which is a place where young children are cared for, is not expected to have a significantly different composition from the air in other outdoor environments. The percentages mentioned in the question do not match the typical composition of air near a nursery. Therefore, option 'd' is not the correct answer.
In conclusion, based on the given percentages, the situation where 78% nitrogen, 16% oxygen, and 3.5% carbon dioxide gas in the air is present is when we consider exhaled air in a room.
Explanation:
Air is made up of various gases, including nitrogen, oxygen, and carbon dioxide. The percentages mentioned in the question represent the composition of these gases in the air. Let's analyze each option to understand which situation matches these percentages.
a) At the forest:
In a forest, the air is primarily composed of nitrogen, oxygen, and other gases. However, the percentages mentioned in the question (78% nitrogen, 16% oxygen, and 3.5% carbon dioxide) are not typical for the air in a forest. Therefore, option 'a' is not the correct answer.
b) Near a park:
The air near a park is similar to the air in other outdoor environments. It consists of approximately 78% nitrogen, 21% oxygen, and a small percentage of other gases, including carbon dioxide. The percentages mentioned in the question do not match the composition of air near a park. Therefore, option 'b' is not the correct answer.
c) Exhaled air in a room:
When we breathe out, the air we exhale contains a higher concentration of carbon dioxide compared to the air we inhale. The percentages mentioned in the question (78% nitrogen, 16% oxygen, and 3.5% carbon dioxide) closely match the composition of exhaled air. This is because we inhale air with a similar composition to the atmosphere, but when we exhale, we release carbon dioxide that our bodies have produced. Therefore, option 'c' is the correct answer.
d) Near a nursery:
The air near a nursery, which is a place where young children are cared for, is not expected to have a significantly different composition from the air in other outdoor environments. The percentages mentioned in the question do not match the typical composition of air near a nursery. Therefore, option 'd' is not the correct answer.
In conclusion, based on the given percentages, the situation where 78% nitrogen, 16% oxygen, and 3.5% carbon dioxide gas in the air is present is when we consider exhaled air in a room.
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Community Answer
78% of nitrogen, 16% of oxygen and 3.5% of carbon dioxide gas in air i...
The percentage of oxygen and carbon dioxide in inhaled air is 21% and 0.04% respectively. During respiration, oxygen is used up by the cells producing carbon dioxide. The percentage of carbon dioxide in exhaled air is 4.4% and oxygen is 14-16% and nitrogen is 78%.
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78% of nitrogen, 16% of oxygen and 3.5% of carbon dioxide gas in air is present at which of the following situations?a)At the forest b)Near a parkc)Exhaled air in a roomd)Near a nurseryCorrect answer is option 'C'. Can you explain this answer?
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