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JAMB Biology 1994 Question 40

Question 40

Pollution

People who suck petrol with their mouths run the risk of increasing in their blood the concentration of

  1. A.iron
  2. B.lead
  3. C.calcium
  4. D.magnesium.
Show the answer and explanation

Answer: B (lead)

Explanation

Leaded petrol contains lead compounds, and sucking it lets lead into the body, where it is poisonous.