Multiple Choice QuestionsWhich of the following species contains an equal number of σ and Π bond?
HCO3-
XeO4
(CN)2
(CN)2
Consider the following compounds
Hyperconjugation occurs in
I only
II only
III only
III only
The enolic form of ethyl acetoacetate as below has
18 sigma bonds and 2 pi-bond
16 sigma bonds and 1 pi-bond
9 sigma bonds and 2 pi-bond
9 sigma bonds and 2 pi-bond
The pair of compounds that can exist together is
FeCl3.SnCl2
HgCl2,SnCl2
FeCl2,SnCl2
FeCl2,SnCl2
Which of the following molecules has the maximum dipole moment?
CO2
CH4
NH3
NH3
C.
NH3
CO2 and CH4 have zero dipole moment as these are symmetrical in nature. Between NH3 and NF3 , NF3 has greater dipole moment though in NH3 and NF3 both, N possesses one lone pair of electrons.
This is because, in the case of NH3, the net N-H bond dipole is in the same direction as the direction of the dipole of the lone pair but in the case of NF3, the direction of the net bond dipole of three -N-F bonds is opposite the that of the dipole of the lone pair.
Which one of the following species has the plane triangular shape?
N3
NO3-
NO2-
NO2-
Magnetic moment 2.83 BM is given by which of the following ions?
(At. no.: Ti =22; Cr=24; Mn=25; Ni=28)
Ti3+
Ni2+
Cr3+
Cr3+
Which of the following organic compounds has same hybridization as its combustion product -(CO)2?
Ethane
Ethyne
Ethene
Ethene
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