How to prepare for Hydrocarbons for CUET-UG ?
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General Learning Resources
Expected Weightage
The Common University Entrance Test (CUET) for Chemistry, particularly the Hydrocarbons chapter, has shown specific trends in marking patterns and weightage over the last three years (2021-2023). Below is a detailed analysis:
1. Chapter-wise Weightage (Hydrocarbons)
Hydrocarbons is a crucial chapter under Organic Chemistry , contributing 6-8 marks (approx. 10-12% weightage) in CUET Chemistry.
Year-wise Breakdown:
| Year | No. of Questions | Marks | Weightage (%) |
|---|---|---|---|
| 2023 | 3-4 | 12 | ~10% |
| 2022 | 2-3 | 6-9 | ~8% |
| 2021 | 2-4 | 6-12 | ~7-10% |
2. Sub-topic-wise Distribution
The chapter is divided into Alkanes, Alkenes, Alkynes, and Aromatic Hydrocarbons , with varying emphasis:
| Sub-topic | Weightage (2021-2023) | Key Topics Asked |
|---|---|---|
| Alkanes | 20-25% | Preparation, Wurtz reaction, Combustion |
| Alkenes | 30-35% | Markovnikov’s rule, Ozonolysis, Addition reactions |
| Alkynes | 20-25% | Acidity, Preparation (Dehydrohalogenation) |
| Aromatic Hydrocarbons | 25-30% | Electrophilic substitution, Friedel-Crafts reactions |
3. Marking Pattern
- Correct Answer: +5 marks (CUET follows a fixed marking scheme).
- Incorrect Answer: -1 mark (Negative marking applicable).
- Unattempted: 0 marks.
4. Trend Analysis
- Increasing Focus on Reactions Mechanisms (e.g., Electrophilic addition in alkenes, Benzene reactions).
- More Application-based Questions (e.g., Predicting products, IUPAC naming).
- Aromatic Hydrocarbons gained slightly more weightage in 2023.
5. Preparation Tips
- Focus on name reactions (e.g., Friedel-Crafts, Wurtz).
- Practice conversion-based questions (e.g., Alkane → Alkene → Alkyne).
- Revise IUPAC nomenclature and isomerism.
Conclusion
Hydrocarbons remains a high-weightage chapter (6-12 marks), with Alkenes Aromatic Hydrocarbons being the most tested. Expect 2-4 questions in CUET 2024, primarily from reaction mechanisms and properties.
Would you like a topic-wise PYQ breakdown for deeper analysis?
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