Askarel is the generic term for a group of nonflammable synthetic chlorinated hydrocarbons used as electrical insulating media. Which term best fits this description?

• A. Askarel
• B. Mineral Oil
• C. Neoprene
• D. PCB Oil

Answer: (A)

Askarel is the umbrella name for a family of insulating liquids made from synthetic chlorinated hydrocarbons that are nonflammable and used to fill electrical equipment like transformers. This group was developed to improve fire safety compared with traditional mineral oil. The description fits best because it defines a broad class rather than a single chemical. Mineral oil is flammable, neoprene is a solid polymer, and PCB oil refers to a specific chemical (polychlorinated biphenyl) within that broader family. So the term that best matches the description is Askarel.