Which is not one of the harmful substances emitted from the exhaust pipes of vehicles?
(A) Lead particles (B) Nitrogen (C) CO
(D) SO2
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Lead particles is not emitted from the exhaust pipes of vehicles.
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Car exhaust fumes contain certain poisonous chemicals, including carbon monoxide, sulfur dioxide, nitrogen oxides, formaldehyde, benzene and soot, all of which can be detrimental to the human body if consistently inhaled in large quantities.
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