Q.

Compound X on reaction with O3 followed by Zn/H2O gives formaldehyde and 2-methylpropanal as products. The compound X is      [2022]

1 3-methylbut-1-ene  
2 2-methylbut-1-ene  
3 2-methylbut-2-ene  
4 pent-2-ene  

Ans.

(1)