Hi friend,
Apart from physics and chemistry, almost all of Maths syllabus is mostly used in Civil Engg.

12th physics mostly used for IT CS ECE EEE branches.

And in Civil Mech generally 11th Physics is used with alot of topics like kinematics friction work power rotational etc.

So if u see their is no unit of 12th Physics which is used in civil.

Going to chem sub basics chemistry are used in engg until and unless you have choosen chemical branches.

All the very best!

I hope this might clear your doubts

For more queries plz comment.

Thankyou.

It actually vary from one college to another. So please open the syallbus of that particular college in which you wanna go and match it.