Hello Kuldeep,

It is also advised to have an early start to every preparation. The more time you have in hand for preparation the better the outcomes. So, in my opinion, it is better to start in class 11th so you have enough time to grasp the concepts memorize them

Everyone has their own choice of books. The two books that are used the most were

1.) Chemical Engineering for GATE -Ram Prassad

2.) Arihant's Chapter-wise Previous Solved Paper: Chemical Engg

One more book I followed for objective type questions was the book by O P Gupta (Although not as

Actually you should not think of this while studying for the first time ….

JUST ENJOY THE SUBJECT

But when you revise, it is important and you would know it after you solve jee questions (past 10 years)

PHYSICS :

Rotational motion (Rigid body dynamics)

Other topics like kinematics ,

Hello Akkramani,

The Core subjects for GATE Chemical Engineering are:-

Sections                                                         Topics    

Engineering Mathematics                                 Calculus

                                                                     Complex Variables

                                                                     Differential Equations

                                                                     Linear Algebra

                                                                     Numerical Methods

                                                                     Probability and Statistics

Process Calculations and Thermodynamics          State Mass

                                                                               Energy Balances

                                                                              Thermodynamics

                                                                              Open Systems

Fluid Mechanics & Mechanical Operation                     Fluid Statics

                                                                             Newtonian and Non-Newtonian Fluids

                                                                             Shell Balances

This is are fixed subject or any changes will happen

Both go neck a neck and are the market leaders in this sector. You can choose either one of them for your preparation. However ideally you should take the mock series of both the institutes.

All the best!