You are given a solution of iron sulphate. Which of the following do you think cannot displace iron from iron sulphate?

Which of the following elements will produce an oxide that will dissolve in water to form an acid?

The least reactive metal among the following is:

When a vessel is exposed to moist air for a long time, then a green coating is formed on its surface. The vessel must be made of:

Which among the following is the most reactive metal?