11. Valence Bond Theory is primarily applicable to:
- A) Ionic compounds
- B) Covalent compounds
- C) Metallic compounds
- D) Hydrogen-bonded compounds
- Answer: B
12. Which of the following is an example of a molecule with sp² hybridization?
- A) CHâ‚„
- B) BF₃
- C) COâ‚‚
- D) Hâ‚‚O
- Answer: B
13. In Valence Bond Theory, delocalized electrons are:
- A) Confined to one atom
- B) Shared by several atoms
- C) Located between two specific atoms
- D) In the nucleus
- Answer: B
14. Which type of hybridization is seen in ethene (Câ‚‚Hâ‚„)?
- A) sp
- B) sp²
- C) sp³
- D) sp³d
- Answer: B
15. A triple bond consists of:
- A) Three sigma bonds
- B) Two sigma bonds and one pi bond
- C) One sigma bond and two pi bonds
- D) Three pi bonds
- Answer: C
16. Which molecule has sp hybridization?
- A) Ethyne (Câ‚‚Hâ‚‚)
- B) Ethene (Câ‚‚Hâ‚„)
- C) Methane (CHâ‚„)
- D) Water (Hâ‚‚O)
- Answer: A
17. Sigma bonds are:
- A) Weaker than pi bonds
- B) Stronger than pi bonds
- C) Equal in strength to pi bonds
- D) Not found in covalent bonds
- Answer: B
18. Which orbital overlap is responsible for the formation of a sigma bond in HCl?
- A) s-s overlap
- B) s-p overlap
- C) p-p overlap
- D) p-d overlap
- Answer: B
19. Which of the following molecules contains both sigma and pi bonds?
- A) Hâ‚‚
- B) Nâ‚‚
- C) Oâ‚‚
- D) Fâ‚‚
- Answer: C
20. Which hybridization is seen in the central atom of water (Hâ‚‚O)?
- A) sp²
- B) sp
- C) sp³
- D) sp³d
- Answer: C
