AG Mechanics CDE Practice Exam

Butane can serve as an alternative for acetylene because it can be used in oxy-fuel cutting and welding processes as a fuel gas. Butane can be a suitable replacement for acetylene in situations where acetylene may not be readily available or preferred.

Options B, C, and D, namely Ethane, Helium, and Neon, are not typically used as alternatives for acetylene in oxy-fuel cutting and welding processes. Ethane does not have the same properties as acetylene needed for those processes. Helium and Neon do not have the necessary characteristics to function as a primary fuel gas for cutting and welding applications.