K, Ca, Na, Mg, Al, Zn, Fe, Pb, Cu, Ag. Name one metal That does not displace hydrogen from dilute hydrochloric acid :

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Solution

Explanation
In displacement reaction, more reactive metal displaces less reactive metal.
Since, those atoms which are more reactive than hydrogen it displaces hydrogen in dilute hydrochloric acid.
copper Cu and silver Ag are less reactive than hydrogen and hence cannot displace hydrogen in dilute hydrochloride acid.

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