Question

If an investigation can't decide weather copper or aluminium are more or less reactive than zinc or lead what is wrong in this investigation.​

Answer 1

Answer:

in this investigation the copper and aluminium are more reactive.

coz as per the reactivity series we find that copper and aluminium are more reactive than zinc or lead

Answer 2

Answer:

The blue colour of copper sulphate fades and colourless zinc sulphate solution is obtained. Therefore, zinc is more reactive than copper.

Aluminium has the ability to displace zinc, iron, copper from their respective salt solutions and therefore is more reactive than them