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129. Oxygen content per liter of air is

September 14, 2025 by Admin

10 ml

100 ml

200 ml

100ml

✅ The correct answer is option C.

Categories Biology, Gaseous Exchange MCQs Tags Biology MCQs, Gaseous Exchange MCQs

127. Of the following, which one is a better respiratory medium.

131. Water is _____ times viscous than air

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