Redox Reactions And Electrochemistry Ques 136

Question: Which one of the following metals cannot evolve $ H_2 $ from acids or $ H_2O $ or from its compounds [MP PET/PMT 1988; CPMT 1996; AFMC 1998, 99; Pb. PET 1999; BVP 2003]

Options:

A) $ Hg $

B) $ Al $

C) $ Pb $

D) $ Fe $

Show Answer

Answer:

Correct Answer: A

Solution:

$ Hg $ has greater reduction potential than that of $ {H^{+}} $ and hence cannot displace hydrogen from acid.



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