PCB comprehension Test

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1. PCBs congeners contain the following atoms: (Required.)

Hydrogen, Oxygen, and Chlorine

Hydrogen, and Carbon

Hydrogen, Carbon and Chlorine

Carbon, Oxygen, and water

Just Carbon

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2. The PCBs are used: (Required.)

As a building material for roads

In food as additives

In rivers for decontamination processes

In transformers and capacitors as dielectric fluid

All of them

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3. The PCBs are: (Required.)

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

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4. Select the correct sentence: (Required.)

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

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5. We could find PCBs in the following equipment
1) Transformers
2) Capacitors
3) High voltage switches
4) Electrical cables with oil isolation (Required.)

Just in 1) and 2)

Just in 1), 3), and 4)

Just in 2)

Just in 1), 2), and 3)

All of them

PCB comprehension Test

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* 1. PCBs congeners contain the following atoms: (Required.)

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* 2. The PCBs are used: (Required.)

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* 3. The PCBs are: (Required.)

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* 4. Select the correct sentence: (Required.)

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* 5. We could find PCBs in the following equipment1) Transformers2) Capacitors3) High voltage switches4) Electrical cables with oil isolation (Required.)

1. PCBs congeners contain the following atoms: (Required.)

2. The PCBs are used: (Required.)

3. The PCBs are: (Required.)

4. Select the correct sentence: (Required.)

5. We could find PCBs in the following equipment
1) Transformers
2) Capacitors
3) High voltage switches
4) Electrical cables with oil isolation (Required.)