Which of the following state governments has made it mandatory to sing the state anthem before the commencement of programs in educational and government institutions?

Which of the following has developed a portable optical sensing device named ‘E-Eye’ to detect toxic substances in water? 

Who among the following has been appointed as the Chief Secretary of the Andaman and Nicobar Islands?

At which of the following places has the ‘Vidya Vahini Scheme’ been launched to address transportation-related hurdles for school students?

In which country was the Linguistics Olympiad 2026 held, where India won 4 medals?