The compound that has the lowest boiling point is:

1. HF 2. HCl
3. HBr  4. HI 

Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge | van der Waal Force & Hydrogen Bonding |
Level 3: 35%-60%
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The correct statement about hydrolysis of BCl3 and NCl3 is-

1. NCl3 is hydrolysed and gives HOCl but BCl3 is not hydrolysed
2. Both NCl3 and BCl3 on hydrolysis gives HCl
3. NCl3 on hydrolysis gives HOCl but BCl3 gives HCl
4. Both NCl3 and BCl3 on hydrolysis gives HOCl
Subtopic:  Acidic, Basic Character & Fajan's Rule | Polarity |
 52%
Level 3: 35%-60%
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The correct sequence of the polarity of the following molecule is
a. Benzene                         

b. Inorganic Benzene

c. PCl3F2                           

d. PCl2F3

a b c d
1. P NP NP P
2. NP NP NP P
3. NP P NP P
4. NP P P NP

(Where P=polar, NP=non-polar)

Subtopic:  Polarity |
 55%
Level 3: 35%-60%
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The incorrect order of boiling point is-

1. H2O>CH3OH             

2. NCH33<NHCH32

3. H3PO4>Me3PO4         

4. CH3N3>HN3

Subtopic:  Polarity | van der Waal Force & Hydrogen Bonding |
 57%
Level 3: 35%-60%
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Which of the following is not a perfect nonpolar molecule?

1. B3N3H6                     

2. CCl4

3. SO3                             

4. All of the above

Subtopic:  Polarity |
 56%
Level 3: 35%-60%
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Find the correct statement about the following molecule:

                                            

 

1. The molecule is non-planar
2. The dipole moment (μ) is not equal to zero
3. Both (1) and (2) are correct
4. The dipole moment (μ) is equal to zero
Subtopic:  Polarity |
 64%
Level 2: 60%+
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The compound that has the highest ionic character associated with the X-Cl bond is:

1. PCl5 

2. BCl3

3. CCl4

4. SiCl4

Subtopic:  Polarity |
Level 3: 35%-60%
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The least polar bond is present in which of the following?

1. O-F 2. P-F
3. Si-N 4. B-F
Subtopic:  Polarity |
 61%
Level 2: 60%+
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The correct order of increasing s-character (in percentage) in the hybrid orbitals of the following molecules/ions is:

(i) \(\mathrm{CO}^{2-}_3\)
(ii) \(\mathrm{XeF}_4\)
(iii) \(\mathrm{I}^-_3\)
(iv) \(\mathrm{NCl}_3\)
(v) \(\mathrm{BeCl}_2\)
 
1. (ii)<(iii)<(iv)<(i)<(v) 2. (ii)<(iv)<(iii)<(v)<(i)
3. (iii)<(ii)<(i)<(v)<(iv) 4. (ii)<(iv)<(iii)<(i)<(v)
Subtopic:  Hybridisation |
 71%
Level 2: 60%+
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How many possible resonance forms exist for the nitrate ion, \(\text{NO}_3^-\)​?

1. One  2. Two 
3. Three 4. Four
Subtopic:  Resonance & Nature of Compounds |
 77%
Level 2: 60%+
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