Paint coatings act as a barrier between metal and atmospheric moisture to avoid its contact. The application of a paint coating is a cost-effective way of preventing corrosion. Depending on the application, these metals can be used to reduce the need for additional corrosion protection. One simple way to prevent corrosion is to use a corrosion resistant metal such as aluminium or stainless steel. Page No 53:Ī.We can prevent corrosion by selecting the following things: This is a strongly exothermic reaction, and lot of heat is generated. If this happens, it will react with the moisture present in air and form Sodium hydroxide. It is kept in kerosene to prevent it from coming in contact with oxygen and moisture. Sodium metal is kept in kerosene because sodium is very reactive metal. When lemon juice which contains citric acid is added to it, neutralisation reaction takes place thus the vessel gets cleaned.Ĭ. It forms a layer of copper oxide, which is basic in nature. This is particularly due to the fact that copper has excellent material properties and is is cheap metal as compare to other metals.ī.Copper vessels get tarnished due to corrosion of copper metal. They are the best pots and pans for cooking and roasting. A.The stainless steel vessels in Kitchen have copper coating on the bottom because copper is good conductor of heat and electricity, by using copper cookware, any meal can be prepared in a perfect and gentle way.
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