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Solution


Q.

Read the passage carefully and answer the following questions from (i) to (v).

Metals exhibit their chemical properties as per their electron releasing tendency of atoms. The greater the tendency, the more is the reactivity. Metals react with oxygen, water, hydrogen, acids, etc. They act as reducing agents because they can lose electrons. Some reactions metals undergo are given in this Table:

1. Metal + Oxygen → Metal oxide
2. Metal + Water → Metal Hydroxide + Hydrogen
3. Metal + Acid (dil.) → Metal Salt + Hydrogen
4. Metal A + Salt Solution of Metal B → Salt solution of A + B (Displacement)

 

(ii) Which of the following pairs will undergo displacement reaction:
1 Magnesium Chloride and aluminum metal  
2 Silver nitrate solution and copper metal  
3 Ferrous sulphate solution and silver metal  
4 Sodium chloride solution and copper metal  

Ans.

(2)