Ascent of high mountains may cause altitude sickness in men. Prime cause of this is

Excess of O

_{2}

in blood

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Decreased efficiency of haemoglobin

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Decreased partial pressure of oxygen

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Decreased proportion of oxygen in air

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Solution

The correct option is C Decreased partial pressure of oxygen
Altitude sickness (also known as mountain sickness), is caused by gaining altitude too rapidly, which does not allow the body enough time to adjust to reduced oxygen and changes in air pressure, and causes hypobaric hypoxia (a lack of oxygen reaching the tissues of the body).

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Similar questions

Statement I: Mountaineers carry oxygen cylinders with them while climbing high mountains.

Statement II: The percentage of oxygen in air decrease with increasing altitude.

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