Q. Which monument, built during the Delhi sultanate period, was built according to the correct scientific lines for the first time?
Answer: Alai Minar
Notes: Alai Minar contains a dome that was built according to the correct scientific lines for the first time and also has arches of very nice proportions.

This Question is Also Available in:

हिन्दी
Question Source: 📚This question has been sourced from GKToday's "40000+ GK / General Studies MCQs for SSC & State PCS Exams" App Exclusive Course in GKToday Android Application which provides more than 40K General Knowledge and General Studies questions with explanations asked in all Competitive Exams of India. Download the app here.
📌 Question Number: 42 in 14. Delhi Sultanate: Architecture, Arts and Culture in the above course in App.