From beginning of my preparation I have collected this data. This data is about percentages allotted to a preticular topic in IITJEE paper.These Percentages will definitely help you to follow a right strategy. Please rate me if you feel it usefull.
Physics:-
| Topics | 2007 | 2006 | 2005 | 2004 | Average |
| 1. Mechanics | 33.33 | 22.83 | 27.495 | 20.95 | 26.15125 |
| 2. Fluid Mechanics | 9.26 | 8.15 | 3.45 | 8.33 | 7.2975 |
| 3. Mechanical Waves | 7.41 | 9.78 | 8.57 | 3.57 | 7.3325 |
| 4. Heat & Thermo. | 5.56 | 9.24 | 15.71 | 15.475 | 11.49625 |
| 5. Optics | 11.11 | 8.15 | 12.14 | 15.475 | 11.71875 |
| 6. Electrostatics & Electricity | 12.96 | 7.07 | 11.87 | 15.475 | 11.84375 |
| 7. Magnetism | 7.41 | 14.13 | 5.12 | 5.235 | 7.97375 |
| 8.Circuits with AC and DC Source | 1.85 | 9.78 | 5.12 | 5.12 | 5.4675 |
| 9. Modern Physics | 11.11 | 10.87 | 10.355 | 10.355 | 10.6725 |
| 10. Total | 100 | 100 | 100 | 100 | 100 |
Chemistry:-
| Physical Chemistry | | | | | | |
| | | | | | | |
| Topics | 2007 | 2006 | 2005 | 2004 | 2003 | Average |
| 1.Chemical Kinetics | 1.85 | 0 | 0.925 | 0.4625 | 0.8925 | 0.826 |
| 2.Gaseous State | 3.7 | 2.72 | 3.21 | 2.965 | 3.0875 | 3.1365 |
| 3.Solid State | 3.7 | 4.89 | 4.295 | 4.5925 | 4.44375 | 4.38425 |
| 4.Solution | 3.7 | 3.26 | 3.48 | 3.37 | 0 | 2.762 |
| 5.Ionic Equilibrium | 0 | 6.52 | 3.26 | 4.89 | 4.075 | 3.749 |
| 6.Electro Chemistry | 18.52 | 11.41 | 14.965 | 13.1875 | 14.07625 | 14.43175 |
| 7.Surface Chemistry | 1.85 | 0 | 0.925 | 0.4625 | 0.69375 | 0.78625 |
| 8.Thermo Chemistry | 3.7 | 4.89 | 4.295 | 4.5925 | 4.44375 | 4.38425 |
| 9.Nuclear Chemistry | 1.85 | 11.41 | 6.63 | 9.02 | 7.825 | 7.347 |
| Total | 38.89 | 45.11 | 42 | 43.555 | 42.7775 | 42.4665 |
| | | | | | | |
| Inorganic Chemistry | | | | | | |
| | | | | | | |
| Topics | 2007 | 2006 | 2005 | 2004 | 2003 | Average |
| 1.'S' Block | 3.7 | 0 | 0 | 0 | 0 | 0.74 |
| 2. 'P' Block | 12.96 | 1.63 | 14.045 |