JEE Mains Model Paper 6

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Question : 75 of 90

Marks: +1, -0

Which of the following is a correct statement?

PAN, O3 are formed by chemical reactions from the primary pollutants
SO2,CO2 are secondary pollutants
Sewage, domestic waste are non degradable pollutants
DDT, B.H.C, are degradable pollutants

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