![Which of the following gases has the highest affinity for blood haemoglobin?](https://www.gkseries.com/blog/wp-content/uploads/2021/12/Which-of-the-following-gases-has-the-highest-affinity-for-blood-haemoglobin.png)
Q. Which of the following gases has the highest affinity for blood haemoglobin?
- Carbon dioxide
- Oxygen
- Carbon monoxide
- Nitrogen
Answer: Carbon monoxide
Answer: Carbon monoxide
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