Lead ingested or inhaled is a health hazard after the addition of lead to petrol has been banned wha...........

Environment and Ecology Noise Pollution

Lead ingested or inhaled is a health hazard. after the addition of lead to petrol has been banned, what still are the sources of lead poisoning?

Diesel

Pens and pencils

Paints

Hair oil and Cosmetics

Paints and smelting units are still a source of lead poisoning as they all use lead in substantial amounts

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Smelting units will also be a correct answer ?

Explanation doesn't match