Acetylene cylinders are constructed the same as alternate fuel cylinders?

• A. True
• B. False
• C. They are heavier
• D. They are color-coded differently

Answer: (B)

Acetylene needs special handling because it is unstable when stored under pressure. To make it safe to store, acetylene is dissolved in acetone inside a porous filler inside the cylinder, creating a stabilized solution rather than a simple high-pressure gas. Other fuel gas cylinders are just compressed gases without this acetone–porous filler setup. That fundamental difference in how the gas is stored and stabilized is why acetylene cylinders are not constructed the same as alternate fuel cylinders. The options about being heavier or color-coded differently are not the defining reason for the difference in construction.