Tiêu đề DPP 3 Solutions.pdf ✅

Class : XIth Subject : CHEMISTRY Date : DPP No. : 3 1 (b) Atmosphere is divided into four parts Troposhere 0-10 km Stratosphere 10-50 km Mesosphere 50-85 km Thermosphere 85-100 km 6 (b) Sewage is a biodegradable pollutant because it is easily decompose by microorganism 8 (c) Pollutants which are formed by reaction of primary pollutants (persist in the environment in the form they are passed into it) are called as secondary pollutants e.g., peroxyacyl nitrates (PAN) are formed through reaction between nitrogen oxides and hydrocarbons in the presence of sunlight. 9 (d) Peroxyacetyl nitrate (PAN), peroxybenzoyl nitrate, nitrogen dioxide (NO2) and hydrogen peroxide (H2O2) are the components of smog. Topic :- Environmental Chemistry Solutions