AG Mechanics CDE Practice Exam

Gas leaks on the oxyacetylene rig are checked with

1. A gas detector

2. Soapy water

3. A flame

4. Alcohol solution

The correct answer is: Soapy water

Gas leaks on the oxyacetylene rig are typically checked with soapy water because when soapy water is applied to a connection or a joint, it creates bubbles if there is a gas leak present. This is a simple and effective method to visually identify the location of a leak. Using a gas detector or a flame to check for gas leaks can be dangerous and not as precise as using soapy water. Additionally, an alcohol solution is not commonly used for checking gas leaks in an oxyacetylene rig.