A) causes cancer of skin
B) impairs respiration
C) hampers haemoglobin formation
D) all of the above.
Correct Answer: D
Solution :
: Lead is present in petroleum in the form of \[Pb{{(C{{H}_{3}})}_{4}}\]and\[Pb{{({{C}_{2}}{{H}_{5}})}_{4}}\](tetra ethyl lead) as antiknock agent. This lead causes lead poisoning, which disturbs nervous system, liver, blood forming organs, gastro-intestinal tracts, kidneys in adults and also causes brain damage in children. Inhalation of a large amount of lead causes anorexia, vomiting, diarrhoea, headache, stupor, convulsions and coma.
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