Which statement about natural gas is NOT true?

Which statement about natural gas is NOT true?

• A. It is primarily methane.
• B. It is odorized with mercaptan.
• C. It is non-explosive under normal conditions.
• D. It is lighter than air.

Answer: (C)

Natural gas is mainly methane, which explains its light, odorless-to-odorized nature and its strong safety profile. It is odorized with mercaptan so leaks are detectable by smell, a crucial feature for rapid detection. It is highly flammable and can explode when it mixes with air in the right concentration and an ignition source is present, so the claim that it is non-explosive under normal conditions isn’t true. Its lighter-than-air property means leaks tend to rise and can collect near ceilings, guiding how detectors and ventilation are positioned.

Natural gas is mainly methane, which explains its light, odorless-to-odorized nature and its strong safety profile. It is odorized with mercaptan so leaks are detectable by smell, a crucial feature for rapid detection. It is highly flammable and can explode when it mixes with air in the right concentration and an ignition source is present, so the claim that it is non-explosive under normal conditions isn’t true. Its lighter-than-air property means leaks tend to rise and can collect near ceilings, guiding how detectors and ventilation are positioned.