Hello there,
The topics in 1st year of Btech are actually the revision of the PCM that you have learnt in Grade 11th and 12th.
And be a little attentive in classes or lectures in your college so you won't face much problem.
From physics:
ELECTROMANGNETISM ( the whole section)
Modern Physics
Ray optics and wave optics
Mechanics( class 11 the imp chapters, shm, rotational etc)


From maths:
Complex Numbers
Calculas( the whole part including differential equations)
Matrices and determinants

if you master these chapters, your 1st two years will be actually quite easy than others.

From chemistry:
States of matter( solid, liquid, gases in detail)
Environmental chemistry

be clear with organic chemistry ( if you are going to choose chemical engineering)

Hope it helps!
BEST OF LUCK!

BTech 1st yr will have the same topics for everyone irrespective of their branch , The most important topics from first year are Engineering Mechanics & Basics of C programming. The names might change so check according to your university syllabus

BTech 2nd year will have your subjects of your branch so since i dont know your branch I am afraid i can not answer that.

Thank you

Dear Aspirants ,

It will decide according to the branch wise ,because every branch having different courses of studies but if we go through the basic then first year and 2nd year most important basic programming (such as C programming language ,data structure, fundamental of number systems ) ,mathematics ,communication etc..

So dont worry for the first year because in first year you will go through all the subjects then after you will go through the purely inside your branch .

Hope it will helpful

Thanks

Hey dear, the first year of b.tech is same for every branches, you learn C,C++, mathematics,electrical, physics and chemistry as major subjects in first year. Going to 2nd year also changes the subjects of different branches. So, from 2nd year there are variety of subjects for different branches, like in mechanical you learn strength of materials, manufacturing tech., material engineering, and in cse you learn data stuctures, computer networks e.t.c