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

1. 1. Which of the following bonds is strongest?

   • A. Covalent bond
   • B. Ionic bond
   • C. Metallic bond
   • D. Hydrogen bond

2. 2. An ionic bond is formed between:

   • A. A metal and a non-metal
   • B. Two non-metals
   • C. Two metals
   • D. A metal and a metalloid

3. 3. Covalent bonds are formed by:

   • A. Sharing of electrons
   • B. Transfer of electrons
   • C. Acceptance of electrons
   • D. Donation of electrons

4. 4. The number of valence electrons in nitrogen atom is:

   • A. 5
   • B. 3
   • C. 7
   • D. 2

5. 5. Which of the following molecules has a linear shape?

   • A. CO2
   • B. H2O
   • C. NH3
   • D. CH4

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

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

7. 7. The bond angle in water (H2O) molecule is approximately:

   • A. 104.5°
   • B. 109.5°
   • C. 120°
   • D. 180°

8. 8. Which theory explains the shape of molecules based on electron pair repulsions?

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

9. 9. The concept of hybridization was introduced by:

   • A. Linus Pauling
   • B. G.N. Lewis
   • C. Sidgwick
   • D. V.V. Sidgwick

10. 10. Which type of intermolecular forces are present in HCl?

    • A. Dipole-dipole forces
    • B. London dispersion forces
    • C. Hydrogen bonding
    • D. Ionic bonds

11. 11. Hydrogen bonding is strongest in:

    • A. HF
    • B. HCl
    • C. HBr
    • D. HI

12. 12. The bond order of N2 molecule is:

    • A. 3
    • B. 2
    • C. 1
    • D. 0