Q.

Which of the following molecules represents the order of hybridisation sp2, sp2, sp, sp from left to right atoms           [2018]

1 HC≡C-C≡CH  
2 CH2=CH-C≡CH  
3 CH2=CH-CH=CH2  
4 CH3-CH=CH-CH3  

Ans.

(2)

CH2sp2=CHsp2-Csp≡CHsp