Question

metal A displaces metal B from its salt solution metal C displaces metal from its salt solution arrange metals A,B and C in decreasing order of reactivity​

Answer 1

Metal A displaces metal B from its solution. Hence, it is more reactive than B.

Answer 2

(Here, the metal displaced by metal C is missing. Assume that metal C displaces metal A from its salt solution.)

If metal A displaces metal B from its salt solution metal C displaces metal A from its salt solution, the decreasing order of reactivity of metals A, B and C will be $\[C > A > B\]$.

Explanation:

• As metal A displaces metal B from its salt solution, it means metal A is more reactive than metal B.
• Similarly, if metal C displaces metal A from its salt solution, it means metal C is more reactive than metal A.
• Therefore, metal C is the most reactive metal among A, B and C while B is the least reactive.
• Thus, the decreasing order of the reactivity of metals A, B and C must be $\[C > A > B\]$.