which are major marks scoring chapters

							
Dear gaotham reddy
For iit jeee there is no fixed weitage, it  vary from year to year...

If you see last 5 years paper topics from which most of the question asked is........

Maths:      
 calculus, Vectors, Complex numbers, co-ordinate geometry(2D+3D) Quadratic equations.


Physics:    
 Optics, Modern physics, Thermodynamics, A/C circuits, Fluid mechanics, Experiments.


Chemistry: 
Solid state, chemica bonding, Aldehydes, ketones, carboxylic acids, Alkenes, 
                alkynes, stereo and geometrical isomerism, transition elements, coordiantion compounds,
               electro chemistry, kinetics and equilibrium.


but I will suggest you to cover alll the topics and give more stress on above given topics.


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post it here and we will get you the answer and detailed solution very quickly.
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 All the best. 
 
Regards, 
Askiitians Experts 
Badiuddin