Fe
Cu
Ca
Sn
Explanation
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Discussions (13)
Its a lie
For a metal to displace hydrogen from a basic solution it has to be an amphoteric metal
Of all the options,only tin(Sn) is amphoteric
the solution is a basic solution. only an amphoteric elements can displace hydrogen from a basic compound. of all the elements listed, tin is the only amphoteric metal.
Yes
Hydrogen can only be displaced by metal that is higher than it in the electrochemical series
In the options given its only iron(fe) that is higher than hydrogen
The correct answer ought to be the metal highest in the E. C. S higher than hydrogen, and among the options listed there, the metal highest is calcium
The answer is C
Calcium (ca) is higher the rest of the elements listed as options in the electrochemical series,it is even higher than sodium
calcium react with water to produce calcium hydroxide and hydrogen gas
the ans is calcium
