Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows.
| Metal | Iron(II) sulphate | Cooper(II) sulphate | Zinc sulphate | Silver nitrate |
| A | No reaction | Displacement | ||
| B | Displacement | No reaction | Displacement | |
| C | No reaction | No reaction | No reaction | No reaction |
Explanation
A + FeSO4 → No reaction, because A is less reactive than iron
A + CuSO4 → Displacement, because A is more reactive than copper
B + FeSO4 → Displacement, because B is more reactive than iron
B + ZnSO4 → No reaction, because B is less reactive than zinc
C + FeSO4 → No reaction, because C is less reactive than iron
C + CuSO4 → No reaction, because C is less reactive than copper
C + ZnSO4 → No reaction, because C is less reactive than zinc
C + AgNO3 → Displacement, because C is more reactive than silver
D + FeSO4/CuSO4/ZnSO4/AgNO3 → No reaction, because D is less reactive than iron, copper, zinc, and silver
From the above equations, we get:
(i) B is the most reactive metal.
(ii) If B is added to a copper sulphate solution, then it would displace copper from its salt .
B + CuSO4 → Displacement
(iii) The arrangement of the metals in the order of decreasing reactivity is:
B > A > C > D
NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:
Welcome to the NCERT Solutions for Class 10 Science - Chapter . This page offers a step-by-step solution to the specific question from Excercise 2 , Question 3: Samples of four metals A, B, C and D were taken and added to the following solution one by one. The ....
Comments