It is dangerous to leave the car engine running in a closed garage, because it may cause serious pollution due to poisoning by emission of

A CO<sub>2</sub>
B CO
C Unburnt petrol
D SO<sub>2</sub>

Correct Answer: CO

The extremely high concentrations of carbon monoxide produced by an engine can raise CO concentrations in a closed building so quickly that a person may collapse before they even realize there is a problem.
Carbon monoxide reduces the amount of oxygen to the brain, causing CO intoxication, and lack of reasoning.Hence option D is correct answer.
Bissoy MCQ
#General Knowledge #Chemistry

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