Since there isn't a single official PDF from the publisher, you’ll mostly find community-driven solutions: Scribd & Academia.edu: Users often upload Exercise Solutions for specific chapters. University Repositories:

Narsingh Deo’s "Graph Theory" remains a valuable textbook. Use solution materials ethically: try problems independently first, then consult hints or instructor-approved solutions for learning. For authoritative help, rely on legitimate course materials, library copies of textbooks, and instructors or tutors.

Visualizing graph embeddings and thickness.

Pick one option (or say "All") and I’ll produce the content.

Instructors, advanced students, and self-learners studying combinatorial graph theory.

Searching for "Narsingh Deo Graph Theory Chapter [X] solutions" on academic forums like Quora or Stack Exchange. FreeBookCentre for supplementary PDFs and related graph theory materials.