The angular shape of ozone molecule (O3) consists of 

(a) 1 sigma and 2 pi-bonds

(b) 2 sigma and 2 pi-bonds

(c) 1 sigma and 1 pi-bonds

(d) 2 sigma and 1 pi-bonds

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The correct order of increasing bond angles in the following species is

(a)Cl2O < ClO2ClO2-

(b) ClO2 < Cl2O < ClO2-

(c) Cl2O < ClO2- < ClO2  

(d) ClO2- < ClO2 < Cl2

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In an octahedral structure, the pair of d orbitals involved in d2sp3-hybridisation is

(a) dx2-y2, dz2

(b) dxy, dx2-y2

(c) dz2, dxz

(d) dxy, dyz

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Equilateral shape has

(a) sp hybridisation

(b) sp2 hybridisation

(c) sp3 hybridisation

(d) dsp2 hybridisation

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AsF5 molecule is trigonal bipyramidal. The hybrid orbitals used by As-atoms for bonding are

(a) dx2-y2, dz2, s, px, py

(b) dxy, s,px, py, pz

(c) s, px, py, pz, dxy

(d) dx2-y2, s, px, py, pz

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Overlap of which of the following atomic orbitals would be maximum to form the strongest
covalent bond.

(1) 1s-2s (σ)

(2) 1s-2p (σ)

(3) 2p-2p (π)

(4) 2p-2p (σ)

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The correct order of increasing bond angle order is 

(1) NH2->NH3 >NH4+

(2) NH4+>NH3 >NH2-

(3) NH3>NH2- >NH4+

(4) NH3>NH4+ >NH2-

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The number of sigma bonds in P4O10 is 

(1) 6

(2) 16

(3) 20

(4) 7

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Which of the following leads to bonding?

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Which of the following have a three dimensional network structure?

(1) SiO2

(2) (BN)y

(3) P4(white)

(4) 1 and 2 both

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