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1. A metal M does not liberate hydrogen from acids but reacts with oxygen to give a black colour product. Identify M and black coloured product and also explain the reaction of M with oxygen.
M is . It does not liberate hydrogen gas with dilute acid as it is less reactive than hydrogen gas.
2. A solution of \(CuSO_4\) was kept in an iron pot. After few days, the iron pot was found to have a number of holes in it. Explain the reason in terms of reactivity. Write the equation of the reaction involved.
is more reactive than . Therefore, displaces from .
is more reactive than . Therefore, displaces from .
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