Which of the following will be able to react with dilute HCl to give hydrogen gas?
Which of the following will be able to react with dilute HCl to give hydrogen gas?
A. Cu
B. Mg
C. Hg
D. `Ag`.
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Correct Answer - B
Mg lies above `H_(2)` in the activity series
`Mg+2H^(+)rarrMg^(2+)+H_(2)` has positive Emf.
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