Why the lungs always contain a residual volume of air ?

CBSE Class 10 Science PYQ · Life Processes · Respiration in human beings (respiratory system) · 2 Marks · March 2026 · Standard

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162 Marks · March 2026 · Standard
Why the lungs always contain a residual volume of air ?
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The lungs always contain a residual volume of air so that there is sufficient time for oxygen to be absorbed and for the carbon dioxide to be released. (2)
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