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Q.

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

I. Smelting units
II. Pens and pencils
III. Paints
IV. Hair oils and cosmetics

[A] I, II and III only
[B] I and III only
[C] II and IV only
[D] I,II, III and IV
Answer & Explanation
Option: [B]

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