Florida Wastewater Practice Test

What are some similarities between methane and H2S?

1. Both are colorless and odorless

2. Both are soluble in water

3. Both are flammable, explosive, and colorless

4. Both are lightweight gases

The correct answer is: Both are flammable, explosive, and colorless

Both methane and hydrogen sulfide (H2S) share the characteristics of being flammable, explosive, and colorless, which highlights their similarities in terms of physical and chemical properties. Methane is a well-known hydrocarbon that is highly flammable and is often used as a fuel source. When mixed with air, it can form explosive mixtures. Likewise, H2S is also flammable and poses serious explosion hazards in certain concentrations, particularly in enclosed spaces. The colorlessness of both gases means they can be difficult to detect without proper monitoring equipment, adding a layer of safety concern when handling or working in environments where these gases may be present. While other options mention various properties, they do not encompass the critical safety and chemical reactivity aspects that are crucial when considering the environmental and operational implications of working with these gases.