Question

19. The number of sigma bonds and pi-bonds in CH3-CH=CH2 are respectively:
(A) 7,1 (B) 8,1
(C) 1,8 (D) 2,7
20. Which one is an electrophile ?
(A) AIC13 (B) C2H5NH2
(C) CN (D) C2H50H
21. The hybridized orbitals employed to explain the geometry of 13 - are :
(A) sp2 (B) sp3d2
(C) sp3 (D) sp3d
22. The planar geometry is exhibited by:
(A) C104
- (B) CO32-
(C) N13 (D) PF5
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Answer 1

19) answer is B 8,1........