Final answer:
It is true that volatile radioactive materials must be used in a fume hood to ensure safety by preventing inhalation of harmful vapors. The statement about high-voltage wires being wrapped in insulating material is false; they are held by insulating connectors but are typically bare.
Step-by-step explanation:
The statement that all volatile radioactive material should be used in an operational and certified fume hood is True. When working with these materials, safety is paramount to prevent inhalation of harmful vapors and to control exposure to radiation. These substances can be a significant health hazard if not handled correctly. The use of a fume hood ensures that any harmful fumes are contained and expelled properly, protecting those in the lab as well as the environment. Moreover, it is important to follow additional safety protocols such as wearing appropriate protective equipment and handling the materials as instructed by safety guidelines or a supervisor.
In reference to the additional true or false question provided, the high-voltage wires that are connected to tall metal-frame towers are indeed held aloft by insulating connectors; however, these wires are not generally wrapped in an insulating material. Instead, they are left bare and rely on the surrounding air and distance from grounded objects to serve as insulation. Therefore, the statement is False.