UPSC Prelims Science And Technology – 2022
1) Consider the following: 1. Aarogya Setu2. CoWIN3. Digi Locker4. DIKSHA Which of the above are built on top of open-source digital platforms? 1 and 2 only 2, 3 and 4 only 1, 3 and 4 only 1, 2, 3 and 4 Correct Answer: (D) 1, 2, 3 and 4