On which of the following days is the International Day for Preventing the Exploitation of the Environment in War and Armed Conflict observed every year?

Charles Coste, the world’s oldest Olympic gold medalist, has died at the age of 101. He was associated with which sport?

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

When was the 137th birth anniversary of Maulana Abul Kalam Azad, the first Education Minister of independent India, celebrated?

What is the name of the first survey vessel to be based in the Southern Naval Command, which is the third ship of the Survey Vessel class?