Question

Which metal can displace R from its salt solution? (a) P (b) Q (c) S (d) Both (b) and (c)​

Answer 1

Option d is correct answer

Answer 2

Metal that can displace R from its salt solution is Zinc.

• Zinc>Iron>Copper (Order of  the reactivity)

• As one can see, zinc is by far the most reactive metal while copper seems to be the weakest reactive metal of such three metals, with iron's reactivity falling somewhere in between. As a result, zinc metal may evict the other two metals from salt solutions.

• Consider how zinc is displaced from copper sulphate when a little quantity when zinc is submerged in such a copper sulphate solution.

• Copper sulphate's blue colour disappears, leaving a colourless zinc sulphate solution. As a result, zinc has higher reactivity than copper.