Arrange the metals in the decreasing order of their reactivity with acids.
Mg, Al, Fe, Cu, Au.

Q. (i) Arrange the following metals in an increasing order of their reactivity towards water: Zn, Fe, Mg, Na.
(ii) Arrange the following in increasing order of their oxides to get reduced with carbon: Al, Na, Fe, Cu.
(iii) Arrange the following metals in order of decreasing order of their chemical reactivity: Mg, Ca, Cu, Fe, Na, Zn, Pb.

Q. Arrange the following metals in the order of their decreasing reactivity?

Q. The order of reactivity of metals is
(a) K > Na > Ca > Au
(b) K > Ca > Na > Mg
(c) Fe > Na > Mg > Au
(d) Cu > Fe > K > Na

Q. Arrange the following metals in which they displace each other from the solutions of their salts in decreasing order:$Al,Cu,Fe,Mg$ and $Zn$
$E_{A{l}^3+/Al}^0+-1.66V,E_{C{u}^2+/Cu}^0=+0.34V$,
$E_{F{e}^2+/Fe}^0=-0.44V,E_{M{g}^2+/Mg}^0=-1.40V$
$E_{Z{n}^2+/Zn}^0=-0.76V$

Q. Arrange the following metals in the order in which they displace each other from the solution of their salts.
$Al,Cu,Fe,Mg$ and $Zn$