The factors affecting corrosion are

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(D) Corrosion is an electrochemical process in which metals are oxidized by the atmosphere,leading to their degradation. The factors affecting the rat

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(D) Corrosion is an electrochemical process in which metals are oxidized by the atmosphere,leading to their degradation. The factors affecting the rate of corrosion include: $(i)$ The position of the metal in the electrochemical series; more reactive metals corrode faster. $(ii)$ The presence of impurities in the metal,which creates local galvanic cells. $(iii)$ The presence of electrolytes or gases like $CO_2$ in water,which increases the conductivity and acidity of the medium,accelerating the process. Therefore,all the given factors affect corrosion.

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