Question

in case of a leak in the evap system, ______ can be released into the atmosphere.
o a. oxides of nitrogen
o b. exhaust gases
o c. carbon monoxide
o d. hydrocarbons

Explanation:

The EVAP (Evaporative Emission Control) system is designed to prevent fuel vapors (which are hydrocarbons) from escaping into the atmosphere. A leak in this system would allow these fuel vapors (hydrocarbons) to be released. Oxides of nitrogen (\(NO_x\)), exhaust gases (a mix including \(CO_2\), \(NO_x\), etc.), and carbon monoxide (\(CO\)) are mainly related to the combustion process in the engine's cylinders and exhaust system, not the EVAP system's function of containing fuel vapors.

Answer:

d. Hydrocarbons