Expected Weightage

The Common University Entrance Test (CUET) for Chemistry, particularly the Chemical Bonding chapter, has shown specific trends in marking patterns and weightage over the last three years (2021-2023). Below is a detailed analysis based on available data and trends:

1. Chapter-wise Weightage (Chemical Bonding)

Chemical Bonding is a high-weightage chapter in CUET Chemistry, usually contributing 8-12% of the total questions in the Chemistry section.

Key Observations: - Consistently 5-7 questions per year. - Higher weightage than other chapters like Environmental Chemistry but less than Organic Chemistry.

2. Marking Pattern (CUET Chemistry)

• Total Marks: 200 (Chemistry section).
• Question Type: MCQs (5 options).
• Marking Scheme:
• +5 for correct answer.
• -1 for incorrect answer.
• 0 for unattempted question.

Chemical Bonding Marks Distribution: - ~20-35 marks (since 5-7 questions × 5 marks each).

3. Sub-topics Breakdown (Chemical Bonding)

The chapter is broadly divided into: 1. Ionic Bonding (15-20% of questions) - Lattice energy, Born-Haber cycle. 2. Covalent Bonding (40-50% of questions) - VSEPR theory, hybridization, bond order. 3. Molecular Orbital Theory (20-25%) - MOT diagrams (O₂, N₂, etc.), magnetic properties. 4. Hydrogen Bonding Van der Waals Forces (10-15%) - Intermolecular forces, dipole moments.

Most Repeated Topics (Last 3 Years): - Hybridization VSEPR shapes (e.g., NH₃, H₂O). - Bond order MOT (O₂⁺ vs O₂). - Exceptions to Octet Rule (e.g., PCl₅, SF₆).

4. Difficulty Level Trends

• 2021-22: Moderate (direct theory-based questions).
• 2023: Slightly analytical (application-based, e.g., MOT diagrams).
• Expected 2024: More numericals (lattice energy calculations).

5. Preparation Strategy

• Focus Areas:
• Hybridization, VSEPR (3D shapes).
• MOT diagrams (O₂, N₂ comparisons).
• Bond enthalpy calculations.
• Avoid: Overemphasis on outdated theories (e.g., Valence Bond Theory exceptions).

Recommended Resources: - NCERT Class 11 12 (Inorganic Chemistry chapters). - Previous years’ CUET papers (2021-23).

Conclusion

Chemical Bonding is a high-scoring chapter in CUET Chemistry with 8-12% weightage. Prioritize VSEPR, MOT, and bond parameters for maximum marks. Expect 5-7 questions (25-35 marks) with moderate difficulty.

Would you like a topic-wise question distribution from past papers?