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Permissible levels of varios gases?

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in india what permissible level of air pollutants in vehicle emmission

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  1. SO2             -60ug/m3  

    NO2             -60ug/m3

    SPM            -140ug/m3

    RPM            -60ug/m3

    PB               -0.75ug/m3

    Ammonia-1-0.1mg/m3

    CO              -2.00mg/m3

    These are the national permissible levels of sulphur dioxide(SO2)Nitrogen(NO2)Suspended pariculate matter(SPM)Rspirable particulate matter(RPM)Lead(PB)Ammonia(A-1)Carbon monoxide(CO)

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