Question

solution of aluminium sulphate, ferrous sulphate, copper sulphate and zinc sulphate were separately taken in four test tubes and some iron fillings were added in each of the test tubes, After few minutes the student would observe thatthe colour of ;

a)copper sulphate solution only changed

b)solution zinc sulphate and aluinium sulhate only changed

c)solution of CuSO4 , ZnSO4, and Al2(SO4)3 changed and that of FeSO4 did not change

d)al the 4 solutions changed

Answer 1

a) is the correct answer Bcoz iron is more reactive than copper, so iron displaces copper from its solution.

Answer 2

solution of aluminium sulphate, ferrous sulphate, copper sulphate and zinc sulphate were separately taken in four test tubes and some iron fillings were added in each of the test tubes, After few minutes the student would observe thatthe colour of-----a)copper sulphate solution only changed