

MCQOPTIONS
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1. |
_ Main pollutants released from petroleum refineries is$? |
A. | CO, SO‚ÇÇ & H‚ÇÇS |
B. | CO‚ÇÇ, NO & SO‚ÇÉ |
C. | CO‚ÇÇ, H‚ÇÇS & NO‚ÇÇ |
D. | SO‚ÇÉ, NO‚ÇÇ & CO‚ÇÇ |
Answer» B. CO‚Äö√á√á, NO & SO‚Äö√á√â | |