The molecule among the following having the highest dipole moment is:

1. CO2
2. HI
3. H2O
4. SO2

Subtopic:  Polarity |
 70%
From NCERT
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The hybridization of nitrogen in NO2+, NO3- and NH4+ respectively is : 

1. sp, sp3, and sp2

2. sp, sp2, and sp3

3. sp2, sp, and sp3

4. sp2, sp3, and sp

Subtopic:  Hybridisation |
 87%
From NCERT
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The correct order of the boiling points of \(\mathrm{H}_2 \mathrm{O}, \mathrm{HF}, \text{ and} \ \mathrm{NH}_3\) is: 

1. HF > H2O > NH3

2. H2O > HF > NH3

3. NH> HF > H2O

4. NH> H2O > HF

Subtopic:  van der Waal Force & Hydrogen Bonding |
 53%
From NCERT
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In PO43- ion, the formal charge on the oxygen atom of the P-O bond is : 

1. +1 2. -1
3. -0.75 4. +0.75
Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
 60%
From NCERT
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In NO3- ion, the number of bond pairs and lone pairs of electrons on the nitrogen atom is

1. 2, 2

2. 3, 1

3. 1, 3

4. 4, 0

Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
 70%
From NCERT
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Which species lacks tetrahedral geometry?

1. BH4-

2. NH2-

3. CO32-

4. H3O+

Subtopic:  Hybridisation |
 63%
From NCERT
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The number of π bonds and σ bonds in the following structure is :

1. 6, 19 2. 4, 20
3. 5, 19 4. 5, 20
Subtopic:  Resonance & Nature of Compounds |
 85%
From NCERT
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The species doesn't have unpaired electrons is:

1. \(N^+_2\) 2. \(O_2\)
3. \(O^{2-}_2\) 4. \(B_2\)
Subtopic:  M.O.T |
 70%
From NCERT
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In which of the following molecule/ion all the bonds are not equal?

1.  XeF4

2. BF4-

3. C2H4

4. SiF4

Subtopic:  Polarity |
 56%
From NCERT
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Hydrogen bond will be strongest in : 

1. HCl

2. H2O

3. HI

4. H2S

Subtopic:  van der Waal Force & Hydrogen Bonding |
 84%
From NCERT
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