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Class 10 Science Medium Mcq English Medium

The residual volume of air always present in the lungs during breathing serves to:

Question
The residual volume of air always present in the lungs during breathing serves to:
Prevent lung collapse only
Provide sufficient time for oxygen absorption and carbon dioxide release
Increase lung weight
Warm incoming air only
Answer
Provide sufficient time for oxygen absorption and carbon dioxide release
Detailed Explanation
The lungs retain a residual volume of air so that there is enough time for oxygen to be absorbed and carbon dioxide to be released.
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