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Biology
Breathing and Exchange of Gases
CBSE
Class 11
Biology
Class 11 - Biology
Breathing and Exchange of Gases
MCQ
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1.
Mark the true statement among the following with reference to normal breathing.
a.
Inspiration is an passive process whereas expiration is active
b.
Inspiration is an active process whereas expiration is passive
c.
Inspiration and expiration are active processes
d.
Inspiration and expiration are passive processes.
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