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) sulfate | Copper(II) sulfate | Zinc sulfate | Silver Nitrate |
| A | No reaction | Displacement | - | - |
| B | Displacement | - | - | - |
| C | No reaction | No reaction | No reaction | Displacement |
| D | No reaction | No reaction | No reaction |
Use the table above to answer the following questions about metals A, B, C, and D.
(i) Which is the most reactive metal?
(ii) What would you observe if B is added to a solution of Copper (II) sulfate?
(iii) Arrange the metals A, B, C, and D in the order of decreasing reactivity.
(i) Metal B is the most reactive as it gives displacement reaction with iron (II) sulphate.
(ii) When metal B is added to copper (II) sulphate solution, a displacement reaction will take place because of which the blue colour of copper (II) sulphate solution will fade and a red brown deposit of copper will be formed on metal B.
(iii) Metal B is the most reactive because it displaces iron from its salt solution. Metal A is less reactive because it displaces copper from its salt solution. Metal C is still less reactive because it can displace only silver from its salt solution, and metal D is the least reactive because it cannot displace any metal from its salt solution. Hence, the decreasing order of reactivity of the metals is B > A > C > D.
Answered by Vishal kumar | 2 years agoProvide Some Important MCQ Questions for Class 10 Science Metals and Non-Metals with Answers?
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