NV C-1A Boilers Practice Questions - Nevada C-1A Boilers Contractor Examination Exam

Incomplete combustion at a gas- or oil-fired boiler is most dangerous because it can produce which product?

Pure nitrogen with no heating value. Distilled water that floods the condensate trap. Inert argon that dilutes the flame to yellow. Carbon monoxide, a toxic, odorless gas.

Correct Answer:

Carbon monoxide, a toxic, odorless gas.

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