Reachability - can we reach vertex v from vertex u? — IITM BS previous year questions

Reachability - can we reach vertex v from vertex u? is part of Applications of BFS and DFS, Week 10 in Mathematics 1. 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.