Home / Medieval History Batch / MED_REG_2007_88 Science and Culture in the 18th Century UPSC Archival Analysis Exam Year 2007 Evidence Source Link ID: MED_REG_2007_88 Ref: Satish Chandra, Medieval India Jai Singh II established observatories at which sites?1. Delhi2. Jaipur3. Ujjain4. Varanasi A. 1 and 2B. 1 and 3C. 2 and 3D. 1, 2, 3, 4