Question

What is the decreasing order of reactivity of
following metals? Na, Al, Cu, Ag, Fe
(A) Na > K > Al > Cu > Ag > Fe
(B) K> Na > Al > Cu > Fe > Ag
(C) K> Na > Al > Fe > Cu > Ag
(D) K> Na > Al > Fe > Ag > Cu​

Answer 1

Question:

What is the decreasing order of reactivity of

following metals? Na, Al, Cu, Ag, Fe

(A) Na > K > Al > Cu > Ag > Fe

(B) K> Na > Al > Cu > Fe > Ag

(C) K> Na > Al > Fe > Cu > Ag

(D) K> Na > Al > Fe > Ag > Cu

Answer:

(B) K > Na > Al > Cu > Fe > Ag

Why?

Because,

→ K is Most effective than Na.

→ Na is most effective than Al.

→ Al is most effective than Cu.

→ Cu is Most effective than Fe.

→ Fe is Most effective than Ag.