PCBs Originate From

Question

PCBs originate from
A) Acid rain
B) Degradation of pesticides such as DDT
C) The bottoms of ships
D) Industrial sources, such as machinery

Accepted Answer

PCBs, or polychlorinated biphenyls, are synthetic organic chemicals that were widely used in industrial applications, including as coolants and lubricants in transformers, capacitors, and other electrical equipment, due to their non-flammability, chemical stability, and high boiling points. They were not primarily associated with acid rain, pesticide degradation, or the bottoms of ships.