The classical smog mainly contains:? Pollution Mcqs December 15, 2019 BILAL KHATTAK0 A.Hydrocarbons only B.Hydrocarbons and SO2 C.Hydrocarbons and N2OD.Particulate matter and SO2undefinedRelated Mcqs:Air pollutants common to urban environments areFine organic or inorganic particles suspended in air is called __________?The light of cities is reduced in comparison to villages due to the presence of:?Photochemical smog formed in congested metropolitan cities mainly consists of:?The classical smog was first observed to:?The classical smog was first observed in the year:?Which one of the following is not a primary pollutant ?Which of the following is correct in relation to materiality??Humus is:?At sea level atmospheric pressure and room temperature