PCB comprehension Test

Hydrogen, Oxygen, and Chlorine

Hydrogen, and Carbon

Hydrogen, Carbon and Chlorine

Carbon, Oxygen, and water

Just Carbon

As a building material for roads

In plastics as additives

In rivers for decontamination processes

In transformers as insulation and refrigerant material

All of them

Beneficial because they are used to treat arthritis

Cancerogenic and can therefore increase the risk of cancer

Substances that could be used as mosquito repellent

Substances that do not affect human health

Toxic only for wild animals

In the environment PCBs are widely spread, do not break down easily, and they can bioaccumulate in food webs

PCBs contaminate the environment but degrade immediately

PCBs contaminate the human body but are eliminated in a few days

PCBs contaminate the surfaces waters; however, they do not affect fish

PCBs occur in the environment, but do not contaminate it

Just in 1) and 2)

Just in 1), 3), and 4)

Just in 2)

Just in 1), 2), and 3)

All of them