Question

Technician A says CO2 and O2 are toxic gases. Technician B says CO2 and O2 are not toxic but are indicators of the efficiency of the engine and emission control systems. Who is right?

Answer 1

CO2 and O2 are not toxic gases but serve as indicators of engine efficiency and emission control systems. They are products of complete combustion in cars' catalytic converters and are non-toxic.

Step-by-step explanation:

Technician B is correct in this case. CO2 (Carbon Dioxide) and O2 (Oxygen) are not toxic gases. In regards to the internal combustion engines, these gases actually serve as indicators of the efficiency of the engine and emission control systems. Catalytic converters in vehicles are designed to promote more complete combustion, reducing the emission of toxic gases and instead producing larger quantities of CO2 and O2. For instance, CO2 is considered a final product indicating complete combustion and is non-toxic and inexpensive. Excess levels of these might contribute to other environmental concerns like greenhouse effects, but they are not toxic to human beings.

Learn more about Emission Control Systems