An aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that (a) Green solution slowly turns brown (b) Lower end of test tube become slightly warm (c) A colourless gas with the smell of burning sulphur is observed (d) Light green solution changes to blue.
Option D. Aluminium is more reactive than iron and hence will displace iron from the solution, so when an aluminium strip is kept immersed in freshly prepared light green coloured ferrous sulphate solution, aluminium displaces iron from iron sulphate and forms blue coloured aluminium sulphate.
