17/01/2026
40 original, MCQs on Chemical Bonding for NEET 12th Class preparation, framed to match the latest pattern and conceptual depth required.
Chemical Bonding – NEET MCQs
1. Which of the following molecules has a bond angle of exactly 120°?
a) NH₃
b) H₂O
c) BF₃
d) CH₄
2. The bond order in O₂²⁻ (peroxide ion) is:
a) 1
b) 1.5
c) 2
d) 2.5
3. Among the following, the molecule with the highest dipole moment is:
a) CO₂
b) CCl₄
c) CHCl₃
d) BF₃
4. The hybridization of the central atom in XeF₄ is:
a) sp³
b) sp³d
c) sp³d²
d) sp²
5. Which of the following compounds exhibits both ionic and covalent bonding?
a) KCl
b) CaCl₂
c) NH₄Cl
d) CH₄
6. In which molecule is the central atom sp hybridized?
a) H₂O
b) NH₃
c) BeCl₂
d) BCl₃
7. The shape of ClF₃ according to VSEPR theory is:
a) Trigonal planar
b) T-shaped
c) Bent
d) Square planar
8. Which of the following has the shortest C–O bond length?
a) CO₃²⁻
b) CH₃OH
c) CO
d) HCOOH
9. Which one is a correct order of bond strength?
a) O₂⁺ > O₂ > O₂⁻
b) O₂⁻ > O₂ > O₂⁺
c) O₂ > O₂⁺ > O₂⁻
d) O₂⁺ > O₂⁻ > O₂
10. The total number of σ and π bonds in CH₂=C=CH₂ is:
a) 6 σ, 2 π
b) 7 σ, 2 π
c) 6 σ, 3 π
d) 8 σ, 2 π
11. Which molecule has a zero dipole moment?
a) NF₃
b) H₂O
c) SO₂
d) CO₂
12. Among B₂, C₂, N₂, O₂, the species with the highest bond order is:
a) B₂
b) C₂
c) N₂
d) O₂
13. The bond angle in H₂S is smaller than that in H₂O due to:
a) Higher electronegativity of S
b) Smaller size of S
c) Larger size of S and lower electronegativity
d) Hydrogen bonding in H₂S
14. Which of the following has a coordinate bond?
a) O₃
b) SO₃
c) HNO₃
d) All of these
15. The paramagnetic species among the following is:
a) N₂
b) O₂⁻
c) CO
d) CN⁻
16. Which of the following violates the octet rule?
a) PCl₅
b) CF₄
c) NH₃
d) H₂O
17. In which of the following molecules is the π-bond formed by lateral overlap of p-orbitals?
a) C₂H₄
b) C₂H₂
c) Both a and b
d) CH₄
18. The number of lone pairs in XeF₆ is:
a) 0
b) 1
c) 2
d) 3
19. Which molecule has a trigonal bipyramidal shape?
a) SF₄
b) BrF₅
c) PCl₅
d) XeF₄
20. The bond length order in the halogens is:
a) F₂ > Cl₂ > Br₂ > I₂
b) I₂ > Br₂ > Cl₂ > F₂
c) Cl₂ > Br₂ > F₂ > I₂
d) Br₂ > I₂ > Cl₂ > F₂
21. Among the following, the molecule with sp³d hybridization and linear shape is:
a) XeF₂
b) I₃⁻
c) Both a and b
d) SF₄
22. Which compound does NOT show resonance?
a) Benzene
b) Ozone
c) Carbonate ion
d) Ethane
23. The bond order of CO molecule is:
a) 2
b) 2.5
c) 3
d) 1.5
24. The correct order of increasing C–O bond length is:
a) CO < CO₃²⁻ < CH₃OH
b) CO₃²⁻ < CH₃OH < CO
c) CH₃OH < CO₃²⁻ < CO
d) CO < CH₃OH < CO₃²⁻
25. Which of the following statements is true regarding H-bonding?
a) It is stronger than a covalent bond
b) It influences boiling point and solubility
c) It is present in all molecules containing H
d) It does not affect physical properties
26. The species having triangular planar shape is:
a) NO₃⁻
b) SO₃
c) Both a and b
d) NH₃
27. Which one has the highest lattice energy?
a) NaCl
b) MgO
c) KCl
d) CaO
28. The geometry and hybridization of [Ni(CN)₄]²⁻ are:
a) Tetrahedral, sp³
b) Square planar, dsp²
c) Octahedral, sp³d²
d) Linear, sp
29. The dipole moment of CH₄ is zero because:
a) It has no polar bonds
b) The C–H bonds are nonpolar
c) The molecule is symmetrical
d) Carbon is electronegative
30. In NO₂, the number of σ bonds and lone pairs on nitrogen are:
a) 2 σ, 1 lone pair
b) 2 σ, 2 lone pairs
c) 3 σ, 0 lone pairs
d) 1 σ, 2 lone pairs
31. The species with three centre-two electron bond (3c-2e) is:
a) B₂H₆
b) C₂H₆
c) Al₂Cl₆
d) N₂O
32. Which of the following is linear?
a) ClO₂⁻
b) I₃⁺
c) SO₂
d) NO₂⁺
33. Which property decreases with increasing bond order?
a) Bond strength
b) Bond length
c) Stability
d) Bond energy
34. The shape of SF₄ is:
a) Tetrahedral
b) See-saw
c) Square planar
d) Trigonal bipyramidal
35. The number of π bonds in N₂O is:
a) 1
b) 2
c) 3
d) 0
36. Which molecule is polar?
a) SF₆
b) SiF₄
c) XeF₄
d) SF₄
37. The bond order in He₂⁺ is:
a) 0
b) 0.5
c) 1
d) 1.5
38. In the oxyacid HClO₄, the number of σ and π bonds are respectively:
a) 7, 2
b) 6, 2
c) 5, 3
d) 4, 4
39. The molecule that has a permanent dipole moment among the following is:
a) cis-1,2-dichloroethene
b) trans-1,2-dichloroethene
c) 1,1-dichloroethene
d) Both a and c
40. The correct increasing order of bond angles is:
a) NH₃ < PH₃ < AsH₃
b) AsH₃ < PH₃ < NH₃
c) PH₃ < AsH₃ < NH₃
d) NH₃ < AsH₃ < PH₃
Answer Key
1. c) BF₃
2. a) 1
3. c) CHCl₃
4. c) sp³d²
5. c) NH₄Cl
6. c) BeCl₂
7. b) T-shaped
8. c) CO
9. a) O₂⁺ > O₂ > O₂⁻
10. a) 6 σ, 2 π
11. d) CO₂
12. c) N₂
13. c) Larger size of S and lower electronegativity
14. d) All of these
15. b) O₂⁻
16. a) PCl₅
17. c) Both a and b
18. b) 1
19. c) PCl₅
20. b) I₂ > Br₂ > Cl₂ > F₂
21. c) Both a and b
22. d) Ethane
23. c) 3
24. d) CO < CH₃OH < CO₃²⁻
25. b) It influences boiling point and solubility
26. c) Both a and b
27. b) MgO
28. b) Square planar, dsp²
29. c) The molecule is symmetrical
30. a) 2 σ, 1 lone pair
31. a) B₂H₆
32. d) NO₂⁺
33. b) Bond length
34. b) See-saw
35. b) 2
36. d) SF₄
37. b) 0.5
38. a) 7, 2
39. d) Both a and c
40. b) AsH₃ < PH₃ < NH₃
