Question

Two experiments with aluminium foil to show it is an active metal.​

Answer 1

Answer:

In activity series, the elements on the top can displace element at the bottom but not vice versa. From the given question, Aluminium can displace iron and copper sulphate solutions. Hence, colour change will be observed in Test-Tube A and Test-tube B. Iron metal cannot displace aluminium but can displace copper sulphate solution. Hence Test-tube D’s colour will change too.

Thus, colour change observed in A, B and D.

Since aluminium displaces both the elements, it is the most reactive elements among all. It is above both the elements in the activity series.