मोटरकार से उत्पन्न प्रदूष� – McqOptions

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1.	मोटरकार से उत्पन्न प्रदूषक जो मानसिक रोग पैदा करता है , होता है ?
A.	NO₂
B.	SO₂
C.	Pb
D.	Hg
Answer» D. Hg

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