<u><em>Displacement reactions: </em></u><em>it is the type of reaction in which reaction starts with the help of two compounds,,, but in the product the reactant that was initially with 1st compound joins with the 2nd compound.. </em><em> A+BC</em>⇒<em>AC+B <u>example: </u>Fe+CuSO4</em>⇒<em>Cu+FeSO4</em><em> </em><u><em>Double displacement reactions: </em></u><em>while it is the type of reaction in which one product is obtained parts of both reacting compounds interchange with each other.. </em><u><em></em></u><em> AB+CD</em>⇒<em>AD+BC</em><em> <u>example: </u>AgNO3+NaCl</em>⇒<em>AgCl+NaNO3.....:)</em><em><u> </u> </em><em></em><u><em> </em></u>
Accidental fires, explosions, and chemical and gas leaks are common at refineries. Such accidents cause higher than usual amounts of pollution, which may result in more acute exposure to pollutants and greater health impacts.