Hi Vinay,

The important topics to be mastered if are not having sufficient time are:

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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.