Which of the following set of metal salt solutions can be stored in all the three containers made of aluminium, zinc and iron without damaging them?Select an answerAMg, Sn and CuBHg, Cu and ZnCNi, Sn and PbDNa, Ca and Mg

The answer is D: Na, Ca and Mg.

Here's why:

The reactivity series of metals is a chart which lists metals in order of decreasing reactivity. In this series, Aluminium is more reactive than Zinc, which is more reactive than Iron.

A metal can be stored in a container made of another metal if it is less reactive than the container metal. This is because a more reactive metal can displace a less reactive metal from its salt solution, which would damage the container.

Looking at the options:

A) Mg, Sn and Cu - Magnesium (Mg) is more reactive than all three container metals (Al, Zn, Fe), so it would damage the containers.

B) Hg, Cu and Zn - Zinc (Zn) is more reactive than Iron (Fe), so it would damage the iron container.

C) Ni, Sn and Pb - Nickel (Ni) is more reactive than Iron (Fe), so it would damage the iron container.

D) Na, Ca and Mg - Sodium (Na), Calcium (Ca) and Magnesium (Mg) are all less reactive than Aluminium (Al), Zinc (Zn) and Iron (Fe), so they can be stored in all three containers without causing damage.