When to use bar chart vs pie chart vs Pareto chart — IITM BS previous year questions

When to use bar chart vs pie chart vs Pareto chart is part of Charts of Categorical Data (L2.2), Week 2 in Statistics 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.