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Solution


Q.

Statement -1: MnO2 is used for preparation of KMnO4.

Statement -2: MnO2 is reduced in the presence of O2 and KOH to prepare KMnO4.
1 Statement-1 is true, Statement -2 is true; statement -2 is a correct explanation for Statement-1.  
2 Statement-1 is true, Statement -2 is true; statement -2 is NOT a correct explanation for Statement-1.  
3 Statement-1: is true, Statement-2 is False.  
4 Statement-1 is False, Statement-2 is True.  

Ans.

(3)

MnO2 is not reduced, rather oxidized to KMnO4 during the preparation reaction