Edge list - list of (u, v) pairs; simple but slow lookup — IITM BS previous year questions

Edge list - list of (u, v) pairs; simple but slow lookup is part of Graph Representations - Edge List and Adjacency List, Week 7 in Computational Thinking. Prasnya files every IIT Madras BS previous year question from this subtopic here, each one with a worked explanation. Take the whole set as a timed mock and you get accuracy, pacing and per-question analysis back.