Q1. The hybridization of carbon in methane (CH₄) is:

sp
sp²
sp³
sp³d

Difficulty: Easy · Topic: Hybridization

Solution

CH₄: 4 bond pairs, 0 lone pairs. Hybridization = sp³, tetrahedral geometry (109.5°).

Q2. Hydrogen bonding is strongest in:

HCl
HF
HBr
HI

Difficulty: Easy · Topic: Hydrogen Bonding

Solution

HF has the strongest hydrogen bonding due to highest electronegativity of F and small atomic size.

Q3. The bond angle in linear geometry is:

180°
90°
120°
109.5°

Difficulty: Easy · Topic: Molecular Geometry

Solution

linear geometry has bond angle 180°.

Q4. The bond angle in trigonal planar geometry is:

120°
90°
180°
109.5°

Difficulty: Easy · Topic: Molecular Geometry

Solution

trigonal planar geometry has bond angle 120°.

Q5. The bond angle in tetrahedral geometry is:

120°
180°
90°
109.5°

Difficulty: Easy · Topic: Molecular Geometry

Solution

tetrahedral geometry has bond angle 109.5°.

Q6. The bond angle in trigonal bipyramidal geometry is:

90° only
120°
90° and 120°
109.5°

Difficulty: Easy · Topic: Molecular Geometry

Solution

trigonal bipyramidal geometry has bond angle 90° and 120°.

Q7. The bond angle in octahedral geometry is:

109.5°
180° only
90°
120°

Difficulty: Easy · Topic: Molecular Geometry

Solution

octahedral geometry has bond angle 90°.

Q8. According to VSEPR theory, the shape of SF₆ is:

Octahedral
Trigonal bipyramidal
Square planar
Tetrahedral

Difficulty: Easy-Medium · Topic: VSEPR

Solution

SF₆: 6 bond pairs, 0 lone pairs. sp³d² hybridization, octahedral geometry.

Q9. The hybridization of the central atom in BeCl₂ is:

sp
sp³
sp²
sp³d

Difficulty: Easy-Medium · Topic: Hybridization

Solution

BeCl₂ has sp hybridization.

Q10. The hybridization of the central atom in BF₃ is:

sp³
sp³d
sp²
sp

Difficulty: Easy-Medium · Topic: Hybridization

Solution

BF₃ has sp² hybridization.

Q11. The hybridization of the central atom in CCl₄ is:

sp²
sp
sp³
sp³d

Difficulty: Easy-Medium · Topic: Hybridization

Solution

CCl₄ has sp³ hybridization.

Q12. The hybridization of the central atom in PCl₅ is:

sp³d²
sp³
sp³d
sp²

Difficulty: Easy-Medium · Topic: Hybridization

Solution

PCl₅ has sp³d hybridization.

Q13. The hybridization of the central atom in XeF₂ is:

sp³d
sp³
sp²
sp³d²

Difficulty: Easy-Medium · Topic: Hybridization

Solution

XeF₂ has sp³d hybridization.

Q14. The hybridization of the central atom in XeF₄ is:

sp³d²
sp³
sp³d
sp²

Difficulty: Easy-Medium · Topic: Hybridization

Solution

XeF₄ has sp³d² hybridization.

Q15. The hybridization of the central atom in NH₃ is:

sp³d
sp
sp³
sp²

Difficulty: Easy-Medium · Topic: Hybridization

Solution

NH₃ has sp³ hybridization.

Q16. The hybridization of the central atom in H₂O is:

sp²
sp
sp³
sp³d

Difficulty: Easy-Medium · Topic: Hybridization

Solution

H₂O has sp³ hybridization.

Q17. The hybridization of the central atom in C₂H₂ is:

sp²
sp³
sp
sp³d

Difficulty: Easy-Medium · Topic: Hybridization

Solution

C₂H₂ has sp hybridization.

Q18. The hybridization of the central atom in SO₂ is:

sp³
sp
sp³d
sp²

Difficulty: Easy-Medium · Topic: Hybridization

Solution

SO₂ has sp² hybridization.

Q19. The hybridization of the central atom in ClF₃ is:

sp³
sp³d
sp²
sp³d²

Difficulty: Easy-Medium · Topic: Hybridization

Solution

ClF₃ has sp³d hybridization.

Q20. The hybridization of the central atom in IF₅ is:

sp³d
sp³d³
dsp³
sp³d²

Difficulty: Easy-Medium · Topic: Hybridization

Solution

IF₅ has sp³d² hybridization.

Q21. Hybridization of central atom in BeH₂:

sp³
sp²
sp³d
sp

Difficulty: Easy-Medium · Topic: Hybridization

Solution

BeH₂: sp hybridization, linear geometry, angle 180°.

Q22. Shape of BeH₂ molecule:

bent
linear
trigonal planar
tetrahedral

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

BeH₂ is linear with sp hybridization.

Q23. Hybridization of central atom in BH₃:

sp³d
sp²
sp
sp³

Difficulty: Easy-Medium · Topic: Hybridization

Solution

BH₃: sp² hybridization, trigonal planar geometry, angle 120°.

Q24. Shape of BH₃ molecule:

linear
tetrahedral
bent
trigonal planar

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

BH₃ is trigonal planar with sp² hybridization.

Q25. Hybridization of central atom in CH₄:

sp²
sp³
sp³d
sp

Difficulty: Easy-Medium · Topic: Hybridization

Solution

CH₄: sp³ hybridization, tetrahedral geometry, angle 109.5°.

Q26. Shape of CH₄ molecule:

trigonal planar
bent
tetrahedral
linear

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

CH₄ is tetrahedral with sp³ hybridization.

Q27. Hybridization of central atom in NH₃:

sp
sp³
sp³d
sp²

Difficulty: Easy-Medium · Topic: Hybridization

Solution

NH₃: sp³ hybridization, pyramidal geometry, angle 107°.

Q28. Shape of NH₃ molecule:

linear
pyramidal
tetrahedral
bent

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

NH₃ is pyramidal with sp³ hybridization.

Q29. Hybridization of central atom in H₂O:

sp³d
sp³
sp
sp²

Difficulty: Easy-Medium · Topic: Hybridization

Solution

H₂O: sp³ hybridization, bent geometry, angle 104.5°.

Q30. Shape of H₂O molecule:

linear
trigonal planar
bent
tetrahedral

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

H₂O is bent with sp³ hybridization.

Q31. Hybridization of central atom in PCl₅:

sp
sp³
sp²
sp³d

Difficulty: Easy-Medium · Topic: Hybridization

Solution

PCl₅: sp³d hybridization, trigonal bipyramidal geometry, angle 90° and 120°.

Q32. Shape of PCl₅ molecule:

trigonal bipyramidal
tetrahedral
linear
bent

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

PCl₅ is trigonal bipyramidal with sp³d hybridization.

Q33. Hybridization of central atom in SF₆:

sp
sp²
sp³
sp³d²

Difficulty: Easy-Medium · Topic: Hybridization

Solution

SF₆: sp³d² hybridization, octahedral geometry, angle 90°.

Q34. Shape of SF₆ molecule:

bent
tetrahedral
linear
octahedral

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

SF₆ is octahedral with sp³d² hybridization.

Q35. Hybridization of central atom in BeCl₂:

sp²
sp³d
sp³
sp

Difficulty: Easy-Medium · Topic: Hybridization

Solution

BeCl₂: sp hybridization, linear geometry, angle 180°.

Q36. Shape of BeCl₂ molecule:

linear
tetrahedral
bent
trigonal planar

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

BeCl₂ is linear with sp hybridization.

Q37. Hybridization of central atom in BF₃:

sp²
sp³
sp³d
sp

Difficulty: Easy-Medium · Topic: Hybridization

Solution

BF₃: sp² hybridization, trigonal planar geometry, angle 120°.

Q38. Shape of BF₃ molecule:

linear
trigonal planar
tetrahedral
bent

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

BF₃ is trigonal planar with sp² hybridization.

Q39. Hybridization of central atom in CCl₄:

sp²
sp³d
sp³
sp

Difficulty: Easy-Medium · Topic: Hybridization

Solution

CCl₄: sp³ hybridization, tetrahedral geometry, angle 109.5°.

Q40. Shape of CCl₄ molecule:

trigonal planar
tetrahedral
bent
linear

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

CCl₄ is tetrahedral with sp³ hybridization.

Q41. Hybridization of central atom in XeF₂:

sp²
sp³
sp
sp³d

Difficulty: Easy-Medium · Topic: Hybridization

Solution

XeF₂: sp³d hybridization, linear geometry, angle 180°.

Q42. Shape of XeF₂ molecule:

linear
tetrahedral
trigonal planar
bent

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

XeF₂ is linear with sp³d hybridization.

Q43. Hybridization of central atom in XeF₄:

sp³
sp²
sp
sp³d²

Difficulty: Easy-Medium · Topic: Hybridization

Solution

XeF₄: sp³d² hybridization, square planar geometry, angle 90°.

Q44. Shape of XeF₄ molecule:

tetrahedral
linear
bent
square planar

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

XeF₄ is square planar with sp³d² hybridization.

Q45. Hybridization of central atom in ClF₃:

sp³
sp²
sp
sp³d

Difficulty: Easy-Medium · Topic: Hybridization

Solution

ClF₃: sp³d hybridization, T-shaped geometry, angle 87.5°.

Q46. Shape of ClF₃ molecule:

T-shaped
tetrahedral
bent
linear

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

ClF₃ is T-shaped with sp³d hybridization.

Q47. Hybridization of central atom in IF₅:

sp²
sp
sp³
sp³d²

Difficulty: Easy-Medium · Topic: Hybridization

Solution

IF₅: sp³d² hybridization, square pyramidal geometry, angle 90°.

Q48. Shape of IF₅ molecule:

square pyramidal
linear
tetrahedral
bent

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

IF₅ is square pyramidal with sp³d² hybridization.

Q49. Hybridization of central atom in XeO₃:

sp³d
sp
sp²
sp³

Difficulty: Easy-Medium · Topic: Hybridization

Solution

XeO₃: sp³ hybridization, pyramidal geometry, angle 103°.

Q50. Shape of XeO₃ molecule:

bent
tetrahedral
linear
pyramidal

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

XeO₃ is pyramidal with sp³ hybridization.

Q51. Hybridization of central atom in SO₂:

sp³
sp²
sp³d
sp

Difficulty: Easy-Medium · Topic: Hybridization

Solution

SO₂: sp² hybridization, bent geometry, angle 119°.

Q52. Shape of SO₂ molecule:

tetrahedral
trigonal planar
linear
bent

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

SO₂ is bent with sp² hybridization.

Q53. Hybridization of central atom in SO₃:

sp³
sp
sp²
sp³d

Difficulty: Easy-Medium · Topic: Hybridization

Solution

SO₃: sp² hybridization, trigonal planar geometry, angle 120°.

Q54. Shape of SO₃ molecule:

linear
trigonal planar
bent
tetrahedral

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

SO₃ is trigonal planar with sp² hybridization.

Q55. Hybridization of central atom in NO₂:

sp²
sp³
sp
sp³d

Difficulty: Easy-Medium · Topic: Hybridization

Solution

NO₂: sp² hybridization, bent geometry, angle 134°.

Q56. Shape of NO₂ molecule:

trigonal planar
linear
tetrahedral
bent

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

NO₂ is bent with sp² hybridization.

Q57. Hybridization of central atom in CO₂:

sp²
sp³
sp³d
sp

Difficulty: Easy-Medium · Topic: Hybridization

Solution

CO₂: sp hybridization, linear geometry, angle 180°.

Q58. Shape of CO₂ molecule:

bent
trigonal planar
linear
tetrahedral

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

CO₂ is linear with sp hybridization.

Q59. Hybridization of central atom in C₂H₂:

sp³
sp³d
sp
sp²

Difficulty: Easy-Medium · Topic: Hybridization

Solution

C₂H₂: sp hybridization, linear geometry, angle 180°.

Q60. Shape of C₂H₂ molecule:

trigonal planar
linear
bent
tetrahedral

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

C₂H₂ is linear with sp hybridization.

Q61. Hybridization of central atom in C₂H₄:

sp
sp³d
sp³
sp²

Difficulty: Easy-Medium · Topic: Hybridization

Solution

C₂H₄: sp² hybridization, planar geometry, angle 120°.

Q62. Shape of C₂H₄ molecule:

tetrahedral
planar
bent
linear

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

C₂H₄ is planar with sp² hybridization.

Q63. Hybridization of central atom in C₂H₆:

sp³
sp
sp³d
sp²

Difficulty: Easy-Medium · Topic: Hybridization

Solution

C₂H₆: sp³ hybridization, tetrahedral geometry, angle 109.5°.

Q64. Shape of C₂H₆ molecule:

tetrahedral
trigonal planar
linear
bent

Difficulty: Easy-Medium · Topic: Molecular Geometry

Solution

C₂H₆ is tetrahedral with sp³ hybridization.

Q65. Bond energy of C-H is approximately:

363 kJ/mol
463 kJ/mol
413 kJ/mol
513 kJ/mol

Difficulty: Easy-Medium · Topic: Bond Energy

Solution

Standard bond energy of C-H = 413 kJ/mol.

Q66. Bond energy of C-C is approximately:

397 kJ/mol
447 kJ/mol
347 kJ/mol
297 kJ/mol

Difficulty: Easy-Medium · Topic: Bond Energy

Solution

Standard bond energy of C-C = 347 kJ/mol.

Q67. Bond energy of C=C is approximately:

564 kJ/mol
664 kJ/mol
714 kJ/mol
614 kJ/mol

Difficulty: Easy-Medium · Topic: Bond Energy

Solution

Standard bond energy of C=C = 614 kJ/mol.

Q68. Bond energy of C≡C is approximately:

939 kJ/mol
889 kJ/mol
839 kJ/mol
789 kJ/mol

Difficulty: Easy-Medium · Topic: Bond Energy

Solution

Standard bond energy of C≡C = 839 kJ/mol.

Q69. Bond energy of O-H is approximately:

413 kJ/mol
513 kJ/mol
463 kJ/mol
563 kJ/mol

Difficulty: Easy-Medium · Topic: Bond Energy

Solution

Standard bond energy of O-H = 463 kJ/mol.

Q70. Bond energy of C-O is approximately:

358 kJ/mol
408 kJ/mol
308 kJ/mol
458 kJ/mol

Difficulty: Easy-Medium · Topic: Bond Energy

Solution

Standard bond energy of C-O = 358 kJ/mol.

Q71. Bond energy of C=O is approximately:

899 kJ/mol
799 kJ/mol
749 kJ/mol
849 kJ/mol

Difficulty: Easy-Medium · Topic: Bond Energy

Solution

Standard bond energy of C=O = 799 kJ/mol.

Q72. Bond energy of N-H is approximately:

391 kJ/mol
441 kJ/mol
491 kJ/mol
341 kJ/mol

Difficulty: Easy-Medium · Topic: Bond Energy

Solution

Standard bond energy of N-H = 391 kJ/mol.

Q73. Bond energy of H-H is approximately:

436 kJ/mol
486 kJ/mol
386 kJ/mol
536 kJ/mol

Difficulty: Easy-Medium · Topic: Bond Energy

Solution

Standard bond energy of H-H = 436 kJ/mol.

Q74. Bond energy of O=O is approximately:

548 kJ/mol
498 kJ/mol
598 kJ/mol
448 kJ/mol

Difficulty: Easy-Medium · Topic: Bond Energy

Solution

Standard bond energy of O=O = 498 kJ/mol.

Q75. Bond energy of N≡N is approximately:

891 kJ/mol
991 kJ/mol
941 kJ/mol
1041 kJ/mol

Difficulty: Easy-Medium · Topic: Bond Energy

Solution

Standard bond energy of N≡N = 941 kJ/mol.

Q76. The bond order of O₂ molecule according to MOT is:

1
2
3
2.5

Difficulty: Medium · Topic: MOT

Solution

O₂: Bond order = (10-6)/2 = 2. (8 bonding, 4 antibonding electrons in MO diagram, with 2 unpaired in π* making it paramagnetic).

Chapter 4: Chemical Bonding

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