Hii Sowmiya,

the important topics for AIIMS are discripted below-

PHYSICS-

• Oscillations And Waves
• Magnetic effect of Current and Magnetism
• Electronic Devices
• Laws of Motion
• Heat and Thermodynamics
• Electrostatics
• Current Electricity
• Kinematics
• Optics
• Atoms & Nuclei
• Electromagnetic Induction
• Motion of System of Particles & Rigid Body
• Dual Nature of Matter & Radiation
• Gravitation
• Alternating CurrentPhysical World & Measurement

CHEMISTRY-

• Organic Chemistry – Some Basic Principles & Techniques
• Chemical Bonding & Molecular Structure
• Coordination Compounds
• p-block Elements
• Thermodynamics
• Equilibrium
• Biomolecules
• Aldehydes, Ketones And Carboxylic Acids
• Alcohol Phenol Ether
• Chemical Kinetics
• Redox Reactions
• s-block Elements
• d & f-block Elements
• Solutions
• Structure of Atom
• Classification Of Elements And Periodicity In Properties
• Hydrocarbons
• Hydrogen
• Haloalkanes And Haloarenes
• Organic Compounds Containing Nitrogen

BIOLOGY-

• Human Health Diseases
• Photosynthesis
• Animal Kingdom
• Ecosystem
• Cell
• Biological Classification
• Transport in Plants
• Digestion & Absorption
• Sexual Reproduction In Flowering Plants
• Application of Biotechnology
• Circulation of Body Fluids
• Human Reproduction
• Evolution
• Plant Kingdom
• Morphology In Flowering Plants
• Structural Organisation In Animals
• Respiration in Plants
• Neural Control And Coordination
• Molecular Basis of Inheritance
• Cell Division
• Biotechnology Principles and Processes
• Environmental Issues
• Excretory Products And Their Elimination
• Chemical Control & Integration
• Principles Of Inheritance And Variation
• Biodiversity And Conservation

For more information please go through the given link-

https://medicine.careers360.com/articles/important-topics-for-aiims-mbbs-2019

hope your confusion is clear now.

thank you

Here are some tips for AIIMS entrance exam preparation according to the subjects.

Tips for studying Physics

Physics is a concept- based subject and has lots of practical problems to solve. Thus, it is crucial that you understand the concepts well and apply when solving the problems. You can refer NCERT books for understanding the basic concepts and then other important books from HC Verma and Aggarwals to increase the level of preparation. Practising problems on regular basis will help you get a grip on concepts and do well in the entrance exam.

Tips for studying Chemistry

Chemistry is a blend of numerous Chemical equations, Problems and also concepts. You should mark important points while studying that will be helpful during revision.

Tips for studying Biology

In Biology, you have to study many concepts and diagrams and remember them. You can refer some good books to clear all the doubts so that you can solve even the complex questions in the examination.

These are some of the important subject tips for AIIMS entrance exam aspirants. Students should allocate appropriate time for all the subjects to be successful in the exam.

good luck!