Final answer:
A carboy can be used for transporting corrosives. It is not designed to transport radioactive substances, explosives, or poison gases, as these require specialized containers advanced protective features.
Step-by-step explanation:
A carboy is a rigid container with a capacity of up to 20 liters used for transporting and storing various types of chemical substances. It is commonly made of glass or plastic and is primarily used to hold liquids. When it comes to what a carboy may be used for, it can be employed for the transportation of corrosives such as acids and bases. These materials must be handled with care due to their potential to damage living tissue or other materials upon contact.
Considering the types of substances listed, transporting radioactive substances, explosives, and poison gases would require specialized containers that can offer additional protective features such as shielding, containment, and pressure resistance. Carboys are not typically designed to safely transport these more hazardous materials. Therefore, the best match for what can be transported using a carboy is corrosives.
Toxic wastes such as old batteries and pesticides also should not be transported in carboys as they may require containers approved for hazardous waste.