i passed out class 12 and i want to know that how can i prepare for IIT 2013 exam and what is the new syllabus for engineering entrance exam

							Hii
Yes you can prepare .I am suggesting you the books that you must prepare with.
Reference Books for Engineering Entrance Exam

Chemistry

NCERT Chemistry text books of class XI and class XII (usually sufficient)
Organic Chemistry by Morrison and Boyd (only for understanding concepts)
Arihant Organic Chemistry Objective (Optional)
Organic, Physical and Inorganic Chemistry books by OP Tandon
Physical Chemistry by RC Mukherjee

Mathematics
NCERT class XI and class XII books (all students should start with these early)
For best concepts you can purchase ‘IIT Mathematics’ by ML Khanna
New Pattern IITJEE Mathematics of Arihant Publications by Dr SK Goyal
Books by SL Loney (Good for coordinate Geometry and Trigonometry)
RD Sharma
GN Bernnam – only use it for calculus as other sections are too advanced for JEE

Physics
NCERT Physics for Class XI and XII (good introduction)
Concepts of Physics, Vol.-I & II, by HC Verma
Physics by D.C. Pandey, Arihant Publications
Fundamentals of Physics, by Halliday, Resnik and Walker (Optional)