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 Multiple Choice QuestionsMultiple Choice Questions

241.

Dipole moment of  is 1.5 D. The dipole moment of  is

  • 1.5 D

  • 2.25 D

  • 1 D

  • 3 D


242.

The hybridisation of C2 and C3 of H3C-CH=C=CH-CH3 are:

  • sp , sp3

  • sp2 , sp

  • sp2 , sp2

  • sp , sp


243.

Hybridisation of central atom in NF3 is

  • sp3

  • sp

  • sp2

  • dsp2


244.

Which one of the following contains P-O-P bond?

  • Hypophosphorus acid

  • Phosphorus acid

  • Pyrophosphoric acid

  • Orthophosphoric acid


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245.

Which of the following orbitals will have zero probability  of finding the electron in the yplane. 

  • px

  • py

  • pz

  • dyz


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246.

What type of orbital hybridisation is considered on P in PCl5?

  • sp3d

  • dsp3

  • sp3d2

  • d2sp3


A.

sp3d

In PCl5, the number of hybrid orbitals, 

H = 12 [V + X + A - C]

where, V = number of valence electrons; X = number of monovalent atoms;  A and C = charge of cation or anion]

H= 12[5 + 5 + 0 - 0]

   = 5

Therefore,  the hybridisation is sp3d. 


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247.

The bond order of CO molecule is

  • 2

  • 2.5

  • 3

  • 3.5


248.

The bond order in O2- ion is

  • 2

  • 1

  • 2.5

  • 1.5


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249.

The molecule having largest dipole moment among the following is :

  • CHI3

  • CH4

  • CHCl3

  • CCl4


250.

Which one ofthe following compounds has sp2 hybridisation ?

  • CO2

  • SO2

  • N2O

  • CO


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