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  4. Each 100 ml of human arterial blood carries ‘P’ ml of O2 and ‘Q’ ml of CO2 whereas each 100 ml of venous blood carries ‘R’ ml of O2 and ‘S’ ml of CO2. Choose the CORRECT values of P, Q, R and S.

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Q. Each 100 ml of human arterial blood carries ‘P’ ml of $O_2$ and ‘Q’ ml of $CO_2$ whereas each 100 ml of venous blood carries ‘R’ ml of $O_2$ and ‘S’ ml of $CO_2$. Choose the CORRECT values of P, Q, R and S.

WBJEEWBJEE 2015

Solution:

In oxygenated and deoxygenated blood the quantity of oxygen is approx 20 ml and 15 ml per 100 ml of blood and the level of $CO_2$ is 48 ml and 52 ml per 100 ml of blood respectively.