General Contractor License (KB2) Practice Exam

The correct answer indicates that oxygen bottles in storage must be separated from combustible materials by a minimum of 20 feet. This distance is established primarily for safety reasons. Oxygen is a highly reactive gas that can significantly accelerate the combustion of flammable materials. By maintaining a minimum distance of 20 feet between oxygen bottles and any combustible substances, the risk of ignition and fire is greatly reduced, enhancing overall workplace safety.

This separation distance is often referenced in safety regulations and guidelines, as it serves to create a buffer zone that helps prevent accidents in environments where oxygen is used or stored. Such precautions are crucial in various industry settings to ensure the security of personnel and property, especially in construction sites or industrial facilities where flammable materials may be present.