Q.

The products A and B in the following reactions, respectively, are:              [2025]

AAg-NO2CH3-CH2-CH2-BrAgCNB

1 CH3CH2CH2NO2,CH3CH2CH2CN   
2 CH3CH2CH2ONO,CH3CH2CH2NC  
3 CH3CH2CH2ONO,CH3CH2CH2CN   
4 CH3CH2CH2NO2,CH3CH2CH2NC  

Ans.

(4)