![What is the source of carbon monoxide?](https://www.gkseries.com/blog/wp-content/uploads/2022/01/What-is-the-source-of-carbon-monoxide.png)
Q. What is the source of carbon monoxide?
A. incomplete burning of wood
B. fuels
C. exhaust fumes of motor vehicles
D. all of above
Answer: all of above
A. incomplete burning of wood
B. fuels
C. exhaust fumes of motor vehicles
D. all of above
Answer: all of above
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