In which of the following compounds is an intramolecular hydrogen bond present?

1. H2O2 2. HCN
3. Cellulose 4. Concentrated acetic acid

Subtopic:  van der Waal Force & Hydrogen Bonding |
From NCERT
NEET - 2016
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The hybridisations of atomic orbitals of nitrogen in NO2+, NO3- and NH4+ are

(a) sp, sp3 and sp2               (b) sp2, sp3 and sp

(c) sp, sp2 and sp3               (d) sp2, sp and sp3

Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
 80%
NEET - 2016
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The correct shape and hybridisation for XeF4 are

(1) octahedral, sp3d2

(2) trigonal bipyramidal, sp3d2

(3) planar triangle, sp3d3

(4) square planar, sp3d2

Subtopic:  Hybridisation |
 62%
NEET - 2016
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In which of the following molecules, all atoms are coplanar ?

Subtopic:  Hybridisation |
 57%
NEET - 2016
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Predict the correct order among the following.

(1) lone pair-lone pair>bond pair-bond pair>lone pair-bond pair

(2) bond pair-bond pair>lone pair-bond pair>lone pair-lone pair

(3) lone pair-bond pair>bond pair-bond pair>lone pair-lone pair

(4) lone pair-lone pair>lone pair-bond pair>bond pair-bond pair

Subtopic:  V.S.E.P.R & V.B.T |
 87%
NEET - 2016
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The pair of electrons in the given carbanion, CH3CC-, is present in which of the following orbitals?

1. sp3 2. sp2
3. sp 4. 2p
Subtopic:  Hybridisation |
 77%
From NCERT
NEET - 2016
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Consider the molecules CH4, NH3, and H2O.
The incorrect statement among the following is: 

1. The H-O-H bond angle in H2O is larger than the H-C-H bond angle in CH4.

2. The H-O-H bond angle in H2O is smaller than the H-N-H bond angle in NH3.

3. The H-C-H bond angle in CH4 is larger than the H-N-H bond angle in NH3.

4. The H-C-H bond angle in CH4, the H-N-H bond angle in NH3, and the H-O-H bond angle in H2O are all greater than 90°.

Subtopic:  V.S.E.P.R & V.B.T |
 63%
From NCERT
NEET - 2016
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Which of the following species contains equal number of σ and π bonds?

1. HCO3-                                   

2. XeO4

3. (CN)2                                     

4. CH2(CN)2

Subtopic:  Hybridisation |
 74%
NEET - 2015
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The correct bond order in the following species is

1. O22+>O2+>O2-

2. O22+<O2-<O2+

3. O2+>O2-<O22+

4. O2-<O2+>O22+

Subtopic:  M.O.T |
 81%
From NCERT
NEET - 2015
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The total number of π-bond electrons in the following structure is

1. 4       

2. 8         

3. 12         

4. 16

 

 

Subtopic:  Types of Chemical Bond |
 59%
NEET - 2015
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