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Photochemical Smog:
Photochemical smog, a secondary Pollutant, results when the two pollutants, nitrogen oxide and hydrocarbons found in automobile exhausts, react with one another in the presence of sunlight to produce nitrogen dioxide (N02), ozone (03) and a compound called PAN (Peroxylacetyl nitrate), which then appear as a yellowish brown haze. Breathing ozone affects the respiratory and nervous system. It causes respiratory distress, affects eye membranes and stimulates tears. It also causes headache. Ozone also damages rubber articles, textiles and discolours paintings. It has been recently found that smog is harmful to timber. PAN is especially damaging to plants. Plants exposed to PAN exhibit leaf mottling and
Hazard Identification : Each United Nations hazard class (with the exception of class 9) has a distinctive diamond shaped label bearing a pictogram for quick hazard recognition. F
Mechanical parameters Soil is a heterogeneous mixture of organic matter, salts, metal oxides, water and air with silicates as dominant constituents of varying size and composit
Water Borne Diseases: Diseases like cholera and typhoid, as well as diarrhoea and dysentery, are spread through water. Germs of these diseases multiply in the gut of the inf
Fire Blankets : We have already discussed the use of fire blankets, but it is worth noting that fire blankets are now made of glass fibre instead of asbestos, and that they are u
what is the commensalism of a leopard cat
equilibrium, Physics what is the effect of torque and equilibrium on taps, doors,handle bars and bicycles??
Which equinox marks the moment when fall starts in the Northern Hemisphere? Autumnal Equinox
Resuscitation - An Explanation A living person needs the support of "ABC" mentioned below: Airway - clear airway Breathing - normal breathing Circulation - proper bl
Origins of Science: We have seen that the primitive human beings acquired different kinds of knowledge from the use of implements and tools, from cooking on fire. from huntin
Evaluating the possible problems of a technology compared to the expected advantages is known as a ?..
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