Dear aspirant,
The books wont be of much use but yes the topics for sure will be.
Though it will depend upon your branch and college which, in turn, decide your B.tech course.
Mathematics- calculus, differential equations, matrices, etc.
Physics- thermodynamic, electromagnetic theory
Chemistry- inorganic chemistry( J.D.Lee), organic chemistry ( Solomons & Fryhyle)
These books can help you in this.
All the best
No books are required as you will be studying different topics.
You will have common engineering sciences and basic sciences in first year. It will be like electrical electronics and graphics, mechanic etc .
It's not related to 11 ,12
Although you need to remember all the basic concepts of 11,12 like in maths and physics
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