SO2 and CO adversely affect

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SO₂ and CO adversely affect

1. oxygen carrying capacity of blood and functioning of lungs respectively
2. functioning of the respiratory system and brain respectively
3. functioning of the respiratory system and oxygen carrying capacity of blood respectively
4. functioning of air passages and chest respectively

Correct Option: C

SO₂ affects functioning of respiratory system. CO reacts with haemoglobin in blood to form carboxy haemoglobin and reduces the oxygen carrying capacity of blood.