i wud say read these ( as much as possible ):
1. Study thoroughly the books of Physics, Chemistry and Maths of Classes XI & XII.
2. Refer to the following books (XI & XII syllabus) to increase the level of competence :
For Physics :
Concepts of Physics by H.C. Verma Vol/ I & II
For Chemistry :
Physical Chemistry By R.K. Gupta,
Organic Chemistry By Morrison & Boyd,
Organic Chemistry By I. L. Finar,
Inorganic Chemistry By J.D. Lee ,
Objective Chemistry By Dr. P. Bahadur
For Maths :
Higher Algebra By Hall & Knight;
Co-ordinate Geometry By S.L. Loney;
Plane Trigonometry BY S.L. Loney,
Differential Calculus By G.N. Berman ;
Integral Calculus By Shanti Narayan ;
Vector Algebra By Shanti Narayan ;
MCQ By A Das Gupta
i hope this helps u in such timeof distress.
in addition u can download the link given below for ResoNET sample paper ( Resonance Entrance Test ):
http://www.resonance.ac.in/Files/SampleTestPapers.pdf
Do rate me if this was of any help