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What is tarnishing? Mai to bhul hi gaya holi kab hai.​

Answer»

nish is a thin LAYER of corrosion that FORMS over copper, brass, aluminum, magnesium, neodymium and other similar metals as their outermost layer undergoes a chemical reaction. ... It often APPEARS as a dull, gray or black FILM or coating over metal. Tarnish is a surface phenomenon that is self-limiting, unlike rust.



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