Assertion (A): Ortho nitrophenol is more volatile than para nitrophenol. 
Reason (R): In ortho nitrophenol, intramolecular as well as intermolecular hydrogen bonding is present while in para nitrophenol only intermolecular hydrogen bonding is present. 

1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.

Subtopic:  van der Waal Force & Hydrogen Bonding |
 52%
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Assertion (A): On heating PCl5, it readily converts into PCl3 and Cl2 
Reason (R): The axial P-Cl bond is larger than the equitorial P-Cl bond 
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Hybridisation |
From NCERT
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Assertion: Dipole moment of cis-1-chloropropene is more than trans-1-chloropropene 

Reason: In the case of cis-1-chloropropene, dipoles are additive while in the case of trans-1-chloropropene dipoles are subtractive.

1. Both assertion and reason are true, and the reason is the correct explanation of the assertion 

2. Both assertion and reason are true, but the reason is not the correct explanation of the assertion 

3. Assertion is true but reason is false 

4. Both assertion and reason are false 

Subtopic:  Polarity |
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Assertion : The dipole moment of CH2Cl2 is greater than that of CHCl3

Reason : CH2Cl2 has zero dipole moment because all dipoles in CH2Cl2 cancel each other 

1. Both assertion and reason are true, and reason is the correct explanation of the assertion

2. Both assertion and reason are true, but reason is not correct explanation of the assertion 

3. Assertion is true but reason is false 

4. Both assertion and reason are false 

Subtopic:  Polarity |
 52%
From NCERT
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Given below are two statements: 
Assertion (A): PCl3Br2 has zero dipole moment. 
Reason (R): Br atom occupies axial position while Cl atom occupy equatorial position. 
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Polarity |
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Assertion (A): C3O2 is a linear structure.
Reason (R): Each C atom in C3O2 is sp hybridized.

1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
Subtopic:  Hybridisation |
 76%
From NCERT
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The following graph captures potential energy on the y-axis for hydrogen gas formation as a function of the internuclear distance on the x-axis:
        
The bond energy of H2 can be represented by-

1. (c – a)  2. (b – a)
3. (c-a)/2 4. (b-a)/2
Subtopic:  Covalent Bond |
 63%
From NCERT
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The incorrect statements among the following are-

(a) NaCl being an ionic compound is a good conductor of electricity in the solid-state
(b) In canonical structure, there is a difference in the arrangement of atoms
(c) Hybrid orbitals form stronger bonds than pure orbitals
(d) VSEPR theory can explain the square planar geometry of XeF4
 
1. (a) and (b) only 2. (b) and (c) only
3. (c) and (d) only 4. (b) and (d) only
Subtopic:  Resonance & Nature of Compounds | V.S.E.P.R & V.B.T |
 69%
From NCERT
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Among the following, the correct statements about CO32

a.

The hybridisation of the central atom is sp3

b.

Its resonance structure has one C-O single bond and two C=O double bonds

c.

The average formal charge on each oxygen atom is 0.67 units

d.

All C-O bond lengths are equal

Choose the correct option

1. (a), (b)

2. (b), (c)

3. (c), (d)

4. (b), (d)

Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge | Resonance & Nature of Compounds | V.S.E.P.R & V.B.T |
 66%
From NCERT
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Match the coordination number and type of hybridization with the distribution of hybrid orbitals in space based on Valence bond theory.

Coordination number and type of hybridisation Distribution of hybrid orbitals in space
(a) 4, sp3 (i) Trigonal bipyramidal
(b) 4, dsp2 (ii) Octahedral
(c) 5, sp3d (iii) Tetrahedral
(d) 6, d2sp3 (iv) Square planar
 
(a) (b) (c) (d)
1. (ii) (iii) (iv) (i)
2. (iii) (iv) (i) (ii)
3. (iv) (i) (ii) (iii)
4. (iii) (i) (iv) (ii)
Subtopic:  Hybridisation |
 83%
From NCERT
NEET - 2020
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