Environmental Issues
1 Board Biology previous year questions on Environmental Issues — options free on every question; 1 include the answer & explanation free, the rest unlock with PYQ Pass.
Q1 FREE PREVIEW
The most harmful metal pollutant in automobile exhaust is
✓ Correct answer: a)
Lead
Explanation
The most harmful metal pollutant released in automobile exhaust is lead (Pb). It is a highly toxic heavy metal that can damage the nervous system, affect brain development in children, and contaminate air and soil. Lead from vehicle emissions was a major environmental concern before the shift to unleaded petrol.
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