Lead, ingested or inhaled, us a health hazard. After the addition of lead to petrol has been banned, what still are the sources of lead poisoning?
1.

Question

Lead, ingested or inhaled, us a health hazard. After the addition of lead to petrol has been banned, what still are the sources of lead poisoning?
1. Smelting units
2. Pens and pencils
3. Paints
4. Hair oils and cosmetics
Select the correct answer using the codes given below:

Accepted Answer

(B) 1 and 3 only

Answer

(A) 1, 2 and 3 only

Answer

(C) 2 and 4 only

Answer

(D) 1, 2, 3 and 4