Hii Deepanshu,

Yes, definitely you can score 450+ in upsee through ncert.

Some of the preferred book other than ncert are:

BOOKS FOR CHEMISTRY:

• Pradeep Objective Chemistry
• P. Bahadur for Physical Chemistry
• U.P. Engineering Entrance Exam SEE GBTU 14 Years’ Solved Papers by Arihant Publication

BOOKS FOR PHYSICS:

• Concepts of Physics by H.C. Verma (for both, Numerical & Theory)
• MCQ Physics by D.Mukerjee for conceptual questions in Physics
• U.P. Engineering Entrance Exam SEE GBTU 14 Years’ Solved Papers by Arihant Publication

BOOKS FOR MATHEMATICS:

• R.D. Sharma Objective
• U.P. Engineering Entrance Exam SEE GBTU 14 Years’ Solved Papers by Arihant Publication  

ALL THE BEST!!