Dear Student,

as of now there is not one single book containing the solutions of all subjects of NCERT textbooks. However there are various websites online where you can download all the NCERT solutions, they are either available as an e-book format or in a PDF format. But if you would like to know about a few of the reference books, here are some of them given below,

• Concepts of Physics, H.C. Verma
• Mathematics, R.D. Sharma
• Objective Physics, D.C. Pandey
• Master the NCERT Chemistry, Arihant