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Question

Name two metals which will displace hydrogen from dilute acids:

A
Mg and Zn
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B
Cu and Au
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C
Cu and Mg
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D
Zn and Cu
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Solution

The correct option is B Mg and Zn
Magnesium and zinc lie above hydrogen in activity series thus will displace hydrogen from dilute acids.
Gold and copper lie below hydrogen in activity series and thus will not displace hydrogen from dilute acids.

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