Q 1 :    

A compound (x) with molar mass 108 g mol-1 undergoes acetylation to give product with molar mass 192 g mol-1. The number of amino groups in the compound (x) is ______.                       [2024]



(2)

If there is one amino group in an organic compound, then difference between the organic compound and the product after acetylation is of COCH3, which corresponds to a mass difference of 42 gmol-1.

Mass difference between acetylation product and the given organic compound is (192 - 108) gmol-1 = 84 gmol-1. This corresponds to 2 amino groups in the compound.

 



Q 2 :    

Which of the following is the strongest Bronsted base?               [2024]

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  •  

  •  

  •  

(3)

In (1), (2) and (4) lone pair on N is delocalized due to resonance. In (3), lone pair on N is localized that can be donated easily and hence, (3) is strongest base among all the given options.