Continuity of multivariable functions at a point and on a domain — IITM BS previous year questions

Continuity of multivariable functions at a point and on a domain is part of Continuity and Gradient Formula, Week 9 in Mathematics 2. 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.