A toxic material used formerly in manufacturing and building materials is known as?

A toxic material used formerly in manufacturing and building materials is known as?

• A. Pathogen
• B. Polychlorinated Biphenyls (PCBs)
• C. Pesticide
• D. Parasites

Answer: (B)

Polychlorinated biphenyls, or PCBs, were once widely used because they are very stable and resist heat, making them useful as insulating fluids in electrical equipment and as additives in some building materials. But PCBs are highly toxic and persist in the environment, bioaccumulating in organisms and causing serious health problems, including cancer and neurological effects. Due to these dangers, their use has been banned or heavily restricted in many places since the late 20th century. So this term fits the description of a toxic material once used in manufacturing and building materials. The other options describe living organisms or pest-control chemicals, not materials used in construction.

Polychlorinated biphenyls, or PCBs, were once widely used because they are very stable and resist heat, making them useful as insulating fluids in electrical equipment and as additives in some building materials. But PCBs are highly toxic and persist in the environment, bioaccumulating in organisms and causing serious health problems, including cancer and neurological effects. Due to these dangers, their use has been banned or heavily restricted in many places since the late 20th century. So this term fits the description of a toxic material once used in manufacturing and building materials. The other options describe living organisms or pest-control chemicals, not materials used in construction.