Detecting symmetry - undirected graph has symmetric matrix — IITM BS previous year questions

Detecting symmetry - undirected graph has symmetric matrix is part of Adjacency Matrix, Week 8 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.