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Solution


Q.

Assertion: Hydrogen is not included in the activity series of metals.
Reason: It is because it can lose electrons to form positive ions.
1 Both assertion and reason are correct and reason is the correct explanation of assertion.  
2 Both assertion and reason are correct, but reason is not the correct explanation of assertion  
3 Assertion is true, but reason is false.  
4 Assertion is false, but reason is true.  

Ans.

(4)

Hydrogen is included in activity series of metals because like metals, hydrogen can also lose electrons to form positive ions. Thus, assertion is false but reason is true.