Q.

Compound A formed in the following reaction reacts with B gives the product C. Find out A and B.                 [2024]

1 A=CH3-CC-N+a,  B=CH3-CH2-CH2-Br  
2 A=CH3-CH=CH2,  B=CH3-CH2-CH2-Br  
3 A=CH3-CH2-CH3,  B=CH3-CCH  
4 A=CH3-CC- +Na,  B=CH3-CH2-CH3  

Ans.

(1)