Chemistry:
1 NCERT Chemistry XI & XII Basic Text Books
2 P. Bahadur Physical Chemistry Recommended for Physical Chemistry
3 Arihant Prakashan Organic Chemistry Recommended for Organic Chemistry, but one has to be careful as it contains several errors.
4 O.P. Agarwal IIT Chemistry Recommended for Inorganic Chemistry and reference book in general.
5 Ebbing General Chemistry Reference Book
6 J.D. Lee Concise Inorganic Chemistry Reference Book
7 R.T. Morrison, R.N. Boyd Organic Chemistry Reference Book
8 R.C. Mukhrjee Numerical Chemistry Reference Book
9 Francis Carey Organic Chemistry Reference Book
10 I. L. Finar Organic Chemistry-Vol I Reference Book. The book is somewhat outdated but is still extremely useful.
11 Bahal & Bahal Organic Chemistry Reference Book
12 Sienko & Plane Chemistry Principles & Applications Reference Book
13 P.W. Atkins Physical Chemistry Reference Book
14 Bruce H. Mahan University Chemistry Reference Book
Physics:
1 H.C. Verma Concepts of Physics Vol I and II Recommended both as text books and problem books.
2 I.E. Irodov Problems in General Physics Recommended for selected problems
3 Halliday, Resnick & Walker Fundamentals of Physics Reference Book
4 Sears and Zemansky University Physics Reference Book
5 Nelkon and Parker Advanced Level Physics Reference Book
6 A.A Pinsky Problems in Physics Reference Book
7 S.S Krotov Aptitude Test Problems in Physics Reference Book
8 L.A. Sena A collection of questions and Problems in Physics Reference Book
9 V.Zubov & V.Shalnov Problem in Physics Reference Book
10 S.L Loney Elements of Dynamics Part I & II Reference Book
11 S.L. Loney Dynamics of a Particle & of Rigid Bodies Reference Book
12 R.P. Feynman The Feynman Lectures on Physics vols 1 & 2 Reference Book
13 Chen, Min Physics Problems w/solutions Reference Book
14 Tipler Physics Vols I & II Reference