Please find the reference books below and yes you can post your doubt it will be cleared.
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)
