Question

The results of reactions of metals A, B, C, D, E with different solutions are given in the table below. Observe the table and write answers.

Metal	Solution
	FeSO4	CuSO4	ZnSO4	AgSO3	Al(SO4)3
A	No reaction	No reaction	No reaction	A layer is formed	No reaction
B	An ash coloured substance settled on the metal	A light brown layer is formed on the metal	No reaction	A layer is formed	No reaction
C	No reaction	No reaction	No reaction	No reaction	No reaction
D	No reaction	-	No reaction	A layer is formed on the metal	No reaction
E	An ash coloured substance settled on the metal	A light brown layer is formed	Fresh layer is formed	Fresh layer is formed	No reaction

1) Which is the highly reactive metal? Why? 

2) Which is the least reactive metal? Why? 3) Which metals form brown layer? 

4) Arrange the metals A, B, C, D, E in the order of their reactivity? 

5) Among these identify the silver, copper, iron, zinc and aluminium.

Answer 1

1. Metal ‘E’ is more reactive among all the metals given because it displaces all the elements from the compounds given in the table, 

2. Metal ‘C’ is the least reactive metal because it does not displace any other metal from the compounds given in the table. 

3. Metals B and E will form brown layer. 

4. The ascending order is as follows C < A < D < B < E.

5. C is silver, A is copper, D is iron, B is zinc and E is aluminium.