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The supersonic jets cause pollution by the thinning of
READ MORE +The supersonic jets cause pollution by the thinning of
READ MORE +The true statement about ‘green house effect’ is that it is
READ MORE +Mobile combustion accounts
READ MORE +Air pollution can be of
READ MORE +Which of the following is a secondary pollutant
READ MORE +Fine organic or inorganic particles suspended in air is called
READ MORE +All are particulate pollutants except
READ MORE +Particulate pollutants are
READ MORE +Air pollution is severe in
READ MORE +According to EPA of USA, the following is not one of the six major pollutants?
READ MORE +The maximum permissible noise level to which a man working in a chemical plant can be exposed for eight hours per day is about __________ decibels.
READ MORE +Ringelmann chart No. 2 corresponds to __________ percent black smoke.
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