Q. No.Among the following, the correct statements about
(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)
The hybridisation of the central atom is sp3
Its resonance structure has one C-O single bond and two C=O double bonds
The average formal charge on each oxygen atom is 0.67 units
All C-O bond lengths are equal
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 |
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 |
| Assertion (A): | Zn(ll) salts are diamagnetic. |
| Reason (R): | Zn2+ ion has one unpaired electron. |
| 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. |
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) |
Match the compounds of Xe in Column I with the molecular structure in Column II.
| Column-I | Column-II | ||
| (a) | XeF2 | (i) | Square planar |
| (b) | XeF4 | (ii) | Linear |
| (c) | XeO3 | (iii) | Square pyramidal |
| (d) | XeOF4 | (iv) | Pyramidal |
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (i) | (iii) | (iv) |
| 2. | (ii) | (iv) | (iii) | (i) |
| 3. | (ii) | (iii) | (i) | (iv) |
| 4. | (ii) | (i) | (iv) | (iii) |
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
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
| 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. |
| 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. |
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