1. Tardigrade
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  3. Chemistry
  4. Statement I: Jet aeroplane flying at high altitude need pressurization of the cabin. Statement II :: Oxygen is not present at higher altitude.

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Q. Statement I : Jet aeroplane flying at high altitude need pressurization of the cabin.
Statement II :: Oxygen is not present at higher altitude.

States of Matter

Solution:

The air pressure decreases with increase in altitude. So the partial pressure of oxygen is not sufficient for breathing at higher altitude and thus pressurization is needed to increase the concentration of oxygen.