Question

lemon is used for restoring the shine of tarnished copper wire give reason​

Answer 1

Answer:

The sour substance such as lemon or tamarind juice contain acids. Lemon juice contains citric acid and tamarind contain acid. These acids dissolve the coating of copper oxides or basic copper carbonate present on the surface of tarnished copper vessels and make them shining and make them shining red-brown again.

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Answer 2

$\textbf{The \: sour \: substance \: such \: as \: lemon \: contain \: acids.}$

$\textbf{These \: acids \: dissolve \: the \: coating \: of \: copper \: oxide \: or \: basic \: copper \: carbonate \: present \: in \: the \: tarnished \: copper \: wire \: and \: make \: it \: shiny \: again.}$