Question

Sewer gases may include:

• A. hydrogen sulfide, ammonia and methane
• B. esters and carbon monoxides
• C. sulfur dioxide and nitrogen oxides
• D. all of them

Answer 1

The correct option is D all of them

Sewer gases may include hydrogen sulfide, ammonia, methane, esters, carbon monoxide, sulfur dioxide and nitrogen oxides.
Sewer gas is a generic name for the collection of gases and airborne agents
that often accompany sewage and the natural processes and reactions associated with sewage processing and the decomposition of organic materials.