i use these ( in a similar condition as of u, in other words, dilema ):

math

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1. trigno by s l loni

2. coordianate by s l loni

3. prob in calculus by g n berman

4. vector algebra by shanti narayan

5. higher algebra by hall and knight

chem

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1. inorg chem by JD lee

2. org chem by boyd and morrison

3. 3000 solved prob in org chem ( sauchum series )

4. university chem by bruce mahan

5. essentials of phy chem by S CHAND

6.org chem by solomon

phy

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1. resnick halliday

2. hc verma

3. irodov

4. feynmann physics 1,2,3

I have already NCERT 11 and 12 (PCM). Thats a lot more easier in understanding.

And before all these above books, i wud reccommend NCERT , seriously.

Pattern : Study as much as u can.