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  4. The metal that cannot displace hydrogen from dilute hydrochloric acid is:

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Q. The metal that cannot displace hydrogen from dilute hydrochloric acid is:

KEAMKEAM 2001Hydrogen

Solution:

Copper cannot displace hydrogen from dilute hydrochloric acid because in electrochemical series copper is placed below the hydrogen and its electrode potential is less than $ {{H}_{2}} $ .