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Solution


Q.

Given below are two statements:

Statement I: Propene on treatment with diborane gives an addition product with the formula ((CH3)2-CH3B).

Statement II: Oxidation of ((CH3)2-CH3B) with hydrogen peroxide in presence of NaOH gives propan-2-ol.

In the light of the above statements, choose the most appropriate answer from the options given below:             [2024]
1 Statement I is correct but Statement II is incorrect.  
2 Statement I is incorrect but Statement II is correct.  
3 Both Statement I and Statement II are correct.  
4 Both Statement I and Statement II are incorrect.  

Ans.

(2)

Diborane (BH3)2 reacts with alkenes to give trialkyl boranes as addition product. This is oxidised to alcohol by hydrogen peroxide in the presence of aqueous sodium hydroxide.

Hence, statement I is incorrect but statement II is correct.