संविधान सभा द्वारा निम्नलिखित में से किस तिथि को देवनागरी लिपि में हिंदी को भारतीय संघ की आधिकारिक भाषा के रूप में अपनाया गया था?

As of June 2025, who among the following is NOT a serving Chief Minister of any state in India?

Arrange the following Chief Election Commissioners of India in the correct chronological order of their appointment (from earliest to latest): A. T. N. Seshan B. Navin Chawla C. Om Prakash Rawat D. Sunil Arora