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Lakhmir Singh Solutions Class 10 Chemistry Solutions for Exercise in Chapter 3 - Chapter 3 Metals and Non Metals

Question 48 Exercise

(a) Arrange the following metals in order of their chemical reactivity, placing the most reactive metal first:

Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium.

(b) What happens when a rod of zinc metal is dipped into a solution of copper sulphate? Give chemical equation of the reaction involved.

Answer:

(a) Sodium>Calcium>Magnesium>Zinc>Iron>Lead>Copper is the order of their chemical reactivity.

(b) When a strip of zinc metal is dipped in copper sulphate solution, then the blue colour of the copper sulphate will disappear and a coating of reddish brown will deposit on the zinc strip.

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