Null space as a subspace of the domain — IITM BS previous year questions

Null space as a subspace of the domain is part of Null Space of a Matrix - Concept, Week 5 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.