Give a note on: (i) Mist (ii) Smoke (iii) Fumes (iv) Dust
(i) Mists are formed when certain herbicides and insecticides are sprayed in the liquid form over the plants. (ii) Smokes are small particles of soot which are released in atmosphere in the form of oil, smoke etc by incomplete combustion of organic matter. (iii) Fumes are released to atmosphere in metallurgical operations due to result of reactions in factories. (iv) Dusts are released by grinding limestone, cement as fly ash etc.
