High-Frequency GOC Topics in NEET (2019–2024)
| Year | Topic Tested | Key Concept | Trap |
|---|---|---|---|
| NEET 2024 | Hyperconjugation in propene | Count alpha-H atoms | Students count C-C bonds instead of C-H bonds |
| NEET 2024 | sp hybridization identification | CO2 vs. formaldehyde | CO2 is sp (not sp2) |
| NEET 2023 | Electronic effect of -OH | +M dominates in aromatic | Students say -OH is +I (it's -I inductive) |
| NEET 2023 | Carbocation stability | 3° > 2° > 1° > CH3+ | Confusing with carbanion order |
| NEET 2022 | Carbanion stability | Exact reverse of carbocation | Most common GOC error |
| NEET 2022 | E/Z isomerism conditions | CH2=CCl2 cannot show E/Z | Two identical groups on one sp2 carbon |
| NEET 2021 | IUPAC naming | Lowest locant rule | Giving branch lowest locant instead of OH |
| NEET 2021 | -I effect strength order | F > Cl > Br > I | Confusing with +M order (I > Br > Cl > F) |
| NEET 2020 | Inductive + acid strength | More Cl = more acidic | Students assume more atoms always = more acidic |
| NEET 2019 | Geometrical isomers count | 2-butene: 2 isomers | Students add non-geometric stereoforms |
PYQ Insight Summary:
- 3 questions/year average from GOC
- Carbocation/carbanion stability appears in ~70% of years
- Electronic effects (identifying +M/-M/+I/-I) appears in ~60% of years
- IUPAC naming appears in ~50% of years
- Hyperconjugation count (alpha-H calculation) appears in ~40% of years