Question

a student added few piece of al metal to two test tube a and b contain of iron sulphate and copper sulphate ? in which test tube colour change occurs

Answer 1

Colour will change in both a and b test tubes as aluminium is more reactive than iron and copper

Answer 2

In both the test tubes, colour change occurs. In test tube a and b the solution turns white due to the formation of aluminium sulphate leaving iron and copper as residue in test tube a and test tube b respectively.