Chemical Bonding and Molecular Structure – Multiple Choice Questions (MCQs)

1. 13. Which of the following has zero dipole moment?

   • A. CO2
   • B. H2O
   • C. NH3
   • D. SO2

2. 14. The geometry of PCl5 molecule is:

   • A. Trigonal bipyramidal
   • B. Tetrahedral
   • C. Octahedral
   • D. Square planar

3. 15. The hybridization of nitrogen in NH3 is:

   • A. sp3
   • B. sp2
   • C. sp
   • D. dsp2

4. 16. Which of the following is a polar molecule?

   • A. H2O
   • B. CO2
   • C. CH4
   • D. CCl4

5. 17. The maximum number of hydrogen bonds formed by a water molecule is:

   • A. 4
   • B. 2
   • C. 3
   • D. 1

6. 18. Which of the following has the highest bond dissociation energy?

   • A. N≡N
   • B. C≡C
   • C. O=O
   • D. C=C

7. 19. According to Molecular Orbital Theory, the bond order of O2+ is:

   • A. 2.5
   • B. 2
   • C. 1.5
   • D. 1

8. 20. The paramagnetic nature of O2 molecule is explained by:

   • A. Molecular Orbital Theory
   • B. Valence Bond Theory
   • C. VSEPR Theory
   • D. Lewis theory

9. 21. Which of the following exhibits resonance?

   • A. CO3^2-
   • B. CH4
   • C. H2O
   • D. NH3

10. 22. The hybrid orbitals formed by sp2 hybridization are:

    • A. Trigonal planar
    • B. Tetrahedral
    • C. Linear
    • D. Bent

11. 23. Which of the following bonds has the highest ionic character?

    • A. CsF
    • B. LiF
    • C. NaCl
    • D. KBr

12. 24. Dipole moment is a vector quantity and is represented by:

    • A. An arrow pointing from positive to negative end
    • B. An arrow pointing from negative to positive end
    • C. A line with no direction
    • D. A curved arrow