Which exercise was conducted by the Indian Army to test drone and counter-drone capabilities in desert warfare?

Which of the following countries recently successfully test-fired an Intercontinental Ballistic Missile (ICBM) named Minuteman III? 

In which state is the Kanchenjunga National Park located which has become the only Indian park to be ranked as a Natural World Heritage Site by the International Union for Conservation of Nature (IUCN)?

National Education Day is celebrated on which of the following days?

In which state was the tri-service exercise named ‘Purvi Prachand Prahar’ conducted?